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`` no man is an island. ” this saying is also true for organisms in an ecosystem . no organism exists in isolation . individual organisms live together in an ecosystem and depend on one another . in fact , they have many different types of interactions with each other , and many of these interactions are critical for t...
the interaction is seemingly neutral for one of the organisms . for example , a barnacle attached to a whale is able to travel thousands of miles collecting and filtering food from the moving water . the whale doesn ’ t seem to be affected by the little hitchhikers .
what is sour of fresh water ?
`` no man is an island. ” this saying is also true for organisms in an ecosystem . no organism exists in isolation . individual organisms live together in an ecosystem and depend on one another . in fact , they have many different types of interactions with each other , and many of these interactions are critical for t...
this interaction is critical for our health and health of the entire planet ; without them we would be literally buried in dead stuff . crabs , insects , fungi and bacteria are examples of these important clean-up specialists . another category of interactions between organisms has to do with close , usually long-term ...
why is the ecological much more important then the plane ?
`` no man is an island. ” this saying is also true for organisms in an ecosystem . no organism exists in isolation . individual organisms live together in an ecosystem and depend on one another . in fact , they have many different types of interactions with each other , and many of these interactions are critical for t...
individual organisms live together in an ecosystem and depend on one another . in fact , they have many different types of interactions with each other , and many of these interactions are critical for their survival . so what do these interactions look like in an ecosystem ?
could you please compare the different forms of interactions that occur between species in nature ?
`` no man is an island. ” this saying is also true for organisms in an ecosystem . no organism exists in isolation . individual organisms live together in an ecosystem and depend on one another . in fact , they have many different types of interactions with each other , and many of these interactions are critical for t...
another category of interactions between organisms has to do with close , usually long-term interaction between different types of organisms . these interactions are called symbiosis . the impacts of symbiosis can be positive , negative , or neutral for the individuals involved .
what are the types of symbiosis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
such as the law of gravity ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
is there a way to both prove and disprove a hypothesis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
form a hypothesis , or testable explanation . make a prediction based on the hypothesis . test the prediction . iterate : use the results to make new hypotheses or predictions .
i thought a hypothesis was an `` if , then '' statement , and not a prediction ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for instance , we might investigate why the outlet is broken . if the hypothesis was not supported , we would come up with a new hypothesis . for instance , the next hypothesis might be that there 's a broken wire in the toaster .
in the case where a hypothesis is neither proved nor disapproved ( which as explained above would be common ) what do we consider it as- true or false ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
i mean is it like law- 'innocent till proved guilty ' kind of concept which is applied here too ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
if you ca n't really disapprove a hypothesis the why do teachers always say you need more evidence ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the coral reefs of her field sites are bleaching—turning white—might set out to understand why . how do biologists follow up on these observ...
why was the coral bleached white ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plus one feedback step : make an observation . ask a question .
were all scientific facts at one point theory ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
if scientific fact came from theory , should they still be considered theory ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
also , what makes a scientific fact a fact ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
then why is cell theory still confined to being a theory ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
the scientific method has five basic steps , plus one feedback step : make an observation . ask a question . form a hypothesis , or testable explanation .
my question is , is there a proper way to write a hypothesis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
test the predictions . to test the hypothesis , we need to make an observation or perform an experiment associated with the prediction . for instance , in this case , we would plug the toaster into a different outlet and see if it toasts .
what is the importance of iterating is the experiment has already been proven ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for example , our hypothesis in this case could be that the toast did n't toast because the electrical outlet is broken . this hypothesis is not necessarily the right explanation . instead , it 's a possible explanation that we can test to see if it is likely correct , or if we need to make a new hypothesis .
how many times do you have to do a hypothesis to get the right solution for your problem ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
who created the scientific method ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
this was an intresting topic but how does the parasite enter the frog does it eat its way through the skin or inject itself or what ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the coral reefs of her field sites are bleaching—turning white—might set out to understand why . how do biologists follow up on these observ...
what happens if the iterations differ from the first set of testing data ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
is a hypothesis and theory the same thing ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
can a hypothesis be undetermined ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
so , a hypothesis ca n't be proven nor disproven ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
however , they use the same core approach to find answers that are logical and supported by evidence . scientific method example : failure to toast let 's build some intuition for the scientific method by applying its steps to a practical problem from everyday life . 1 .
so we technically use the scientific everyday without us knowing ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
i do n't understand what is hypothesis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
if so , check out the next article ! controlled experiments : learn how controlled experiments are used for hypothesis testing and what the alternatives are if an experiment is n't possible . see an example on coral bleaching !
then are the advances in string theory be considered science keeping in mind that the experiments are limited by technology of today ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
did people recognize that it was n't possible to disprove or prove a hypothesis beyond all reasonable doubt prior to hume 's positing of the problem of induction ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
a prediction is an outcome we 'd expect to see if the hypothesis is correct . in this case , we might predict that if the electrical outlet is broken , then plugging the toaster into a different outlet should fix the problem . 5 .
if it does n't toast and we question that the toaster has a broken wire , should n't we still test the outlet with a `` control '' devise to make sure that the outlet is working properly even if we find a problem with the toaster ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
can someone please explain me the difference between theory and law ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
how does pseudoscience relate to the scientific method ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
how can things be proven with out a doubt so that it can effectively be called pseudoscience ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plus one feedback step : make an observation . ask a question .
how do you know if there is more than one factor affecting what you 've observed ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
can you use the scientific method to prove that the scientific method provides you a strong foundation on questions ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
test the prediction . iterate : use the results to make new hypotheses or predictions . the scientific method is used in all sciences—including chemistry , physics , geology , and psychology .
what are some tips or tricks i can use when i 'm reading a text to identify a control group , independant variable , dependant variable , and experimental group/variable ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
why is salt water not a hypothesis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for instance , we might investigate why the outlet is broken . if the hypothesis was not supported , we would come up with a new hypothesis . for instance , the next hypothesis might be that there 's a broken wire in the toaster .
does a hypothesis or a theory for that matter become a fact once it is supported by the appropriate amount of evidence ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
ask a question . form a hypothesis , or testable explanation . make a prediction based on the hypothesis .
is it possible for us to give another testable explanation even after the first testable explanation has been proven to be correct ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
can i get a more effective ( or an alternative ) example for the logical and practical possibility of proving or disproving a hypothesis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
could a hypothesis be proven ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for example , our hypothesis in this case could be that the toast did n't toast because the electrical outlet is broken . this hypothesis is not necessarily the right explanation . instead , it 's a possible explanation that we can test to see if it is likely correct , or if we need to make a new hypothesis .
or is a hypothesis neither right nor wrong ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
does a hypothesis have to occur in scientific ways ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
if a result supports a hypothesis , then the iteration should be to refine and continue testing ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
why is venous hotter than mercury ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
ask a question . why did n't my bread get toasted ? 3 .
how can all hypothosises not be proven if , say , someone hears a sound and makes the hypothosis that the noise is a cat mewing , then they find the cat and it is making the sound they heard , woud n't that prove the hypothosis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
why ca n't a hypothesis be definitively dis-proven ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
for a scientific method , should n't we also add the list of our materials ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
also , is there a certain number of days , weeks , months or years that the scientific method lasts ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
can you tell me what hypothesis is ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
in a control group all the conditions are provided or in an experimental group all the conditions are provided ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
what will be the exp group and what will be thecontrol group ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
ask a question . form a hypothesis , or testable explanation . make a prediction based on the hypothesis .
what happens once you run out of hypotheses and still have no reasonable explanation for something ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for example , our hypothesis in this case could be that the toast did n't toast because the electrical outlet is broken . this hypothesis is not necessarily the right explanation . instead , it 's a possible explanation that we can test to see if it is likely correct , or if we need to make a new hypothesis .
if your test is right , does that mean that the hypothesis is always right ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
the results of a test may either support or contradict—oppose—a hypothesis . results that support a hypothesis ca n't conclusively prove that it 's correct , but they do mean it 's likely to be correct . on the other hand , if results contradict a hypothesis , that hypothesis is probably not correct .
so , if we ca n't actually prove or disprove a hypothesis , where do we stand on facts ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for instance , we might investigate why the outlet is broken . if the hypothesis was not supported , we would come up with a new hypothesis . for instance , the next hypothesis might be that there 's a broken wire in the toaster .
what we call fact is a very-well supported hypothesis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
the result of one go-round becomes feedback that improves the next round of question asking . how is the scientific method used by biologists ? this article uses a practical example to show how the scientific method works .
is the scientific method used only by biologists or even other scientists ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
are there any other techniques -beside the scientific method- employed by scholars and academics to derive scientific laws ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
is there a specific format that you can use to write a hypothesis ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
should n't that side bubble be reiterate , and propose a new hypothesis be for if the car does not jump-start ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
why does a spider have oily legs and yet can crawl up glass and plastic ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case .
how/why does co2 acidify seawater ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for example , our hypothesis in this case could be that the toast did n't toast because the electrical outlet is broken . this hypothesis is not necessarily the right explanation . instead , it 's a possible explanation that we can test to see if it is likely correct , or if we need to make a new hypothesis .
logically you can neither prove nor disprove a hypothesis right > ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
if your hypothesis ends up wrong do you have to re-do the entire experiment ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
what makes for good scientific data ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
3 . propose a hypothesis . a hypothesis is a potential answer to the question , one that can somehow be tested .
any hypothesis which is tested for the purpose of rejection under the assumption that it is true is called ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
how can you follow up on your own observations of the natural world ? in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called th...
how many cells does are body have ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
the result of one go-round becomes feedback that improves the next round of question asking . how is the scientific method used by biologists ? this article uses a practical example to show how the scientific method works .
can the scientific method be used in sports or cooking or is it only for science ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
if so , check out the next article ! controlled experiments : learn how controlled experiments are used for hypothesis testing and what the alternatives are if an experiment is n't possible . see an example on coral bleaching !
what are the independent variables , dependent variables , and controlled variables of jump starting a car ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
in this article , we ’ ll walk through the scientific method , a logical problem-solving approach used by biologists and many other scientists . the scientific method at the core of biology and other sciences lies a problem-solving approach called the scientific method . the scientific method has five basic steps , plu...
how can a scientific method benefit you if there 's no solution ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
however , your bread does not toast . 2 . ask a question .
can frogs have an extra 2 legs ?
introduction a biology investigation usually starts with an observation—that is , something that catches the biologist ’ s attention . for instance , a cancer biologist might notice that a certain kind of cancer ca n't be treated with chemotherapy and wonder why this is the case . a marine ecologist , seeing that the c...
for instance , we might investigate why the outlet is broken . if the hypothesis was not supported , we would come up with a new hypothesis . for instance , the next hypothesis might be that there 's a broken wire in the toaster .
how do you test new hypothesis with a new controlled experiment ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
if tryptophan is available in the environment , e. coli will take it up and use it to build proteins . however , e. coli can also make their own tryptophan using enzymes that are encoded by five genes . these five genes are located next to each other in what is called the trp operon .
what would be the easiest way to make large amounts of tryptophan , using a strain of e-coli ( through genetic engineering ) ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
tryptophan biosynthesis is also regulated by attenuation ( a mechanism based on coupling of transcription and translation ) . what is the trp operon ? bacteria such as escherichia coli ( a friendly inhabitant of our gut ) need amino acids to survive—because , like us , they need to build proteins .
what is the product of trp operon ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
tryptophan biosynthesis is also regulated by attenuation ( a mechanism based on coupling of transcription and translation ) . what is the trp operon ? bacteria such as escherichia coli ( a friendly inhabitant of our gut ) need amino acids to survive—because , like us , they need to build proteins .
what does the tryptophan actually do when produced by the trp operon ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
it senses whether tryptophan is already present at high levels , and if so , it switches the operon to the `` off '' position , preventing unnecessary biosynthetic enzymes from being made . more trp operon regulation : attenuation depending on the class you 're taking , or on your own interests , you may also have hear...
would the regulation of the trp operon function properly in yeast as well ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight .
does bacteria that 's introduced into the human gut produce its own tryptophan ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
if tryptophan is present in the environment , then e. coli bacteria do n't need to synthesize it , so transcription of the genes in the trp operon is switched `` off . '' when tryptophan availability is low , on the other hand , the operon is switched `` on , '' the genes are transcribed , biosynthetic enzymes are made...
if so how does the tryptophan get into the blood produced by bacteria ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
when tryptophan availability is low , on the other hand , the operon is switched `` on , '' the genes are transcribed , biosynthetic enzymes are made , and more tryptophan is produced . structure of the trp operon the trp operon includes five genes that encode enzymes needed for tryptophan biosynthesis , along with a p...
if one of the genes coded its enzyme incorrectly in the trp operator , what would happen ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
if tryptophan is present in the environment , then e. coli bacteria do n't need to synthesize it , so transcription of the genes in the trp operon is switched `` off . '' when tryptophan availability is low , on the other hand , the operon is switched `` on , '' the genes are transcribed , biosynthetic enzymes are made...
would tryptophan not be produced , or would it just be that nothing happens ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
the trp operon is regulated by the trp repressor . when bound to tryptophan , the trp repressor blocks expression of the operon . tryptophan biosynthesis is also regulated by attenuation ( a mechanism based on coupling of transcription and translation ) .
what happen to the regulation of the tryptophan biosynthetic enzymes in cells that express a mutant form of the tryptophan repressor that binds to dna even when no tryptophan is bound to it ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight .
in the presence of the amino acid in a bacterium , are the operon genes expressed ?
key points : the trp operon , found in e. coli bacteria , is a group of genes that encode biosynthetic enzymes for the amino acid tryptophan . the trp operon is expressed ( turned `` on '' ) when tryptophan levels are low and repressed ( turned `` off '' ) when they are hight . the trp operon is regulated by the trp re...
it senses whether tryptophan is already present at high levels , and if so , it switches the operon to the `` off '' position , preventing unnecessary biosynthetic enzymes from being made . more trp operon regulation : attenuation depending on the class you 're taking , or on your own interests , you may also have hear...
with gene regulation in the cell and the function of the trp operon , how would this process would be affected if there was a mutation in the operator region so that the operator could not carry out its function ?
kings in stone in 1839 , american lawyer and amateur archaeologist john lloyd stephens and english artist frederick catherwood were the first outsiders to venture into the rainforests of central america . they brought back their romanticized accounts and drawings of the remains of ancient maya civilization to an eager ...
although we know far more about ancient maya stelae than catherwood and stephens ever imagined possible , the haze of mystery and intrigue through which they viewed these monuments has hardly evaporated . essay by dr. catherine e. burdick additional resources : lords of creation : the origins of sacred maya kingship ( ...
when did art start and who made art ?
kings in stone in 1839 , american lawyer and amateur archaeologist john lloyd stephens and english artist frederick catherwood were the first outsiders to venture into the rainforests of central america . they brought back their romanticized accounts and drawings of the remains of ancient maya civilization to an eager ...
stelae offer us little information regarding how they were received by the public , and we can only guess as to how effectively they impacted the common person . although we know far more about ancient maya stelae than catherwood and stephens ever imagined possible , the haze of mystery and intrigue through which they ...
when was the maya stela built ?
in the table below , $ a $ , $ b $ , and $ c $ are matrices of equal dimensions . property | example - | - commutative property of addition | $ { a } + { b } = { b } + { a } $ associative property of addition | $ { a } + ( { b } + { c } ) = ( { a } + { b } ) + { c } $ additive identity property | for any matrix $ a $ ,...
in the table below , $ a $ , $ b $ , and $ c $ are matrices of equal dimensions . property | example - | - commutative property of addition | $ { a } + { b } = { b } + { a } $ associative property of addition | $ { a } + ( { b } + { c } ) = ( { a } + { b } ) + { c } $ additive identity property | for any matrix $ a $ ,...
is n't b + o equal to b ?
in the table below , $ a $ , $ b $ , and $ c $ are matrices of equal dimensions . property | example - | - commutative property of addition | $ { a } + { b } = { b } + { a } $ associative property of addition | $ { a } + ( { b } + { c } ) = ( { a } + { b } ) + { c } $ additive identity property | for any matrix $ a $ ,...
$ \begin { align } a+ ( -a ) & amp ; =\left [ \begin { array } { rr } { -2 } & amp ; 8 \ -3 & amp ; 1 \end { array } \right ] +\left [ \begin { array } { rr } { 2 } & amp ; -8 \ 3 & amp ; -1 \end { array } \right ] \\ & amp ; =\left [ \begin { array } { rr } { -2+2 } & amp ; 8+ ( -8 ) \ -3+3 & amp ; 1+ ( -1 ) \end { ar...
can matrices also follow de morgans law ?
in the table below , $ a $ , $ b $ , and $ c $ are matrices of equal dimensions . property | example - | - commutative property of addition | $ { a } + { b } = { b } + { a } $ associative property of addition | $ { a } + ( { b } + { c } ) = ( { a } + { b } ) + { c } $ additive identity property | for any matrix $ a $ ,...
$ \left [ \begin { array } { rr } { 3 } & amp ; -1 \ 7 & amp ; 9 \end { array } \right ] +\left [ \begin { array } { rr } { 0 } & amp ; 0 \ 0 & amp ; 0 \end { array } \right ] =\left [ \begin { array } { rr } { 3 } & amp ; -1 \ 7 & amp ; 9 \end { array } \right ] $ $ \left [ \begin { array } { rr } { 0 } & amp ; 0 & am...
what is the use of a zero matrix ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
the term pharaoh , which originally referred to the king 's palace , became a form of address for the king himself during this period , further emphasizing the idea of divine kingship . religiously , the pharaohs associated themselves with the god amun-ra , while still recognizing other deities . in the mid-1300s bce ,...
do we have any information as to why akhenaten thought only one god should be worshiped ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
egyptian rulers used the idea of divine kingship and constructed monumental architecture to demonstrate and maintain power . ancient egyptians developed wide-reaching trade networks along the nile , in the red sea , and in the near east . early egypt much of the history of egypt is divided into three “ kingdom ” period...
so what actually was the religion for ancient egyptians ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
old kingdom egypt : 2686-2181 bce during the old kingdom period , egypt was largely unified as a single state ; it gained in complexity and achievement and expanded militarily . old kingdom rulers built the first pyramids , which were both tombs and monuments for the kings who had them built . building monumental archi...
do we know how the ancient egyptians built their pyramids ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
building monumental architecture , such as the great pyramid and the sphinx in giza , and temples for different gods required a centralized government that could command vast resources . the builders of the pyramids were not enslaved people but peasants , working on the pyramids during the farming off-season . these pe...
in what evidence or sources do this article rely when states that slave labor was n't used the construction of the pyramids ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
food supplies had political effects , as well , and periods of drought probably contributed to the decline of egyptian political unity at the ends of both the old and middle kingdoms . although we do not know the specific dates and events , most scholars who study this period believe that sometime around the year 3100 ...
and if so , how do we know that there were grave robbers or mummies there ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
building monumental architecture , such as the great pyramid and the sphinx in giza , and temples for different gods required a centralized government that could command vast resources . the builders of the pyramids were not enslaved people but peasants , working on the pyramids during the farming off-season . these pe...
are there any other good explanations for why the pyramids are there ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
for example , in the mythology that developed around unification , narmer was portrayed as horus , a god of lower egypt , where narmer originally ruled . he conquered set , a god of upper egypt . this mythologized version of actual political events added legitimacy to the king ’ s rule .
were there any other rivers that supplied water to egypt ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
what do you think ? why was the nile river essential to egyptian civilization ? how might a writing system like hieroglyphics have helped rulers gain and maintain political power ?
is it true that most civilization are still near the nile river ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
egyptian rulers used the idea of divine kingship and constructed monumental architecture to demonstrate and maintain power . ancient egyptians developed wide-reaching trade networks along the nile , in the red sea , and in the near east . early egypt much of the history of egypt is divided into three “ kingdom ” period...
is there any other mention of the hyksos in ancient middle east history ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
how did rulers use religion to support their positions ? why do you think egypt was invaded so frequently throughout its history ?
what made egypt such an attractive area for rival empires through history ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
egyptians also began to build ships , constructed of wooden planks tied together with rope and stuffed with reeds , to trade goods such as ebony , incense , gold , copper , and lebanese cedar—which was particularly important for construction projects—along maritime routes . middle kingdom : 2000-1700 bce the middle kin...
how many kings did egypt have ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
only the wealthy and important could afford and be considered as deserving of such elaborate burials . old kingdom egypt : 2686-2181 bce during the old kingdom period , egypt was largely unified as a single state ; it gained in complexity and achievement and expanded militarily . old kingdom rulers built the first pyra...
if king tut 's dad tried to get rid of the old kingdom gods then why could n't he make himself the god ?
overview egyptian civilization developed along the nile river in large part because the river ’ s annual flooding ensured reliable , rich soil for growing crops . the egyptians kept written records using a writing system known as hieroglyphics . some writing was preserved on stone or clay , and some was preserved on pa...
new kingdom : 1550-1077 bce around 1550 bce , the new kingdom period of egyptian history began with the expulsion of the hyksos from egypt and restored centralized political control . this period was egypt 's most prosperous time and marked the peak of its power . also in this period , hatshepsut , egypt ’ s most famou...
the nile was the center of all the wealth and plantation in egypt , was n't it ?