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The Medal of Honor According to Army Regulation 670-1, a soldier can now receive 31 military decorations “as a distinctively designed mark of honor denoting heroism, or meritorious or outstanding service or achievement.” During the Civil War, there was only one: the Medal of Honor. The U.S. Army does not have a longsta...
NASA has prepared a new video to illustrate its Mars Atmosphere and Volatile Evolution (MAVEN) mission's investigation of dramatic climate change on Mars. Today, Mars is a cold and barren desert world, with no sign of life, at least on the surface. When the Mars Atmosphere and Volatile Evolution Mission launches in Nov...
A person’s genes play a prominent role in dictating who they become. Genetics is about more than just determining the color of a person’s eyes or hair. Genes can also impact how their brain develops and reveal any likelihood of a person being born with a mental disorder. The study of genetics has become a priority for ...
Fast and curious: Electrons hurtle into the interior of a new class of quantum materials Posted May 16, 2014; 09:00 a.m. As smartphones get smarter and computers compute faster, researchers actively search for ways to speed up the processing of information. Now, scientists at Princeton University have made a step forwa...
NASA’s Kepler Mission to search for exoplanets may be doomed, but thanks to the wealth of data that the telescope has collected, it’s certain to keep scientists busy for a good long time. Recently, those scientists used some of these data, along with data from the Spitzer telescopes, to create a cloud map of Kepler 7b,...
What is accessible electronic and information technology? AccessIT Article ID: 1110 Accessible electronic and information technology is technology that can be used by people with a wide range of abilities and disabilities. It incorporates the principles of universal design. Each user is able to interact with the techno...
Various ceremonies and celebrations were held by several of the First Nation Tribes in Canada giving thanks for the harvest each year. When Europeans, who also held October harvest celebrations, arrived in the 16th century, they brought their traditions with them. English explorer Martin Frosbisher declared Canada's fi...
In Front Of or Behind - To understand the concepts of in front of and behind - To compare positions in space - To be able to talk about positions of in front of or behind Train books or pictures of trains; cards with simple drawings of train car shapes and the words engine, passenger car, and caboose written on them; s...
Paleomagnetic records indicate that the geomagnetic field has existed for at least three billion years. However, based on the size and electrical conductivity of the Earth’s core, the field, if it were not continually being generated, would decay away in only about 20,000 years since the temperature of the core is too ...
The activities within this pack explore simple engineering, structures, materials and the forces required to put a building together. This pack will show how buildings are constructed using scientific ideas. Whether it is a tower made out of spaghetti, a bridge made out of paper or glue made out of milk; you will be ab...
French: Performing With Confidence Connect to Your Teaching Reflect on Your Practice As you reflect on these questions, write down your responses or discuss them as a group. - What is the value of having students enter competitions such as the poetry contest that Daniel entered? - Games are used at all levels of instru...
In effective classrooms, teachers consistently attend to at least four elements: whom they teach (students), where they teach (learning environment), what they teach (content), and how they teach (instruction). If teachers lose sight of any one of the elements and cease investing effort in it, the whole fabric of their...
The United States now dealt with Indians through the War Department. Considering the Indian as a military threat, Congress established an Indian agent system in 1896. Through this system, they assigned agents to different tribes whose responsibility it was to maintain friendships among the Indians, carry out treaty obl...
The Pacific Northwest and California are home to some of the largest trees in existence. A giant sequoia, for example, grows up to 311 feet; a coastal redwood, up to 370. Diameters range from between 16-20 feet, but can grow as much as 30 feet. Just trailing is the Sitka spruce, which averages between 120-180 feet in h...
Basic Effects of Nuclear Weapons Nuclear explosions produce both immediate and delayed destructive effects. Blast, thermal radiation, and prompt ionizing radiation cause significant destruction within seconds or minutes of a nuclear detonation. The delayed effects, such as radioactive fallout and other possible environ...
This Monday’ss blog post is one of the most common medical symptoms out there―FEVER. What is fever? People often have the misconception that fever is a disease but in actuality, fever is the body’s immune response to foreign materials such as bacteria and viruses that somehow makes it inside its system. Fever is genera...
Long before the white man fastened his names to such places, the native people were not unaccustomed to making the journey from Halifax to Minas Basin via the Dartmouth Lakes and the Shubenacadie River. This waterway had been long used by the Mi'kmaq to get themselves to the ocean side for the summer months. An explora...
March 3 – Union Congress creates the Freedmen’s Bureau. The involvement of the Freedmen’s Bureau in the establishment of African-American family structure is rarely discussed as one of the Bureau’s major activities. Although the Bureau is though of having been ineffective overall, many historians credit the Bureau for ...
\|This simulation shows the collision of two celestial bodies, ejecting enough debris into orbit to form a moon large enough for the Kelper spacecraft to detect.\| Researchers have demonstrated for the first time that it is possible for a planetary collision to form a moon large enough for Kepler to detect. Lawrence Live...
Our seventh Geology lesson with our co-op was on sedimentary rocks. Following this lesson, we will have our sedimentary rocks lab, but this day was all about understanding sedimentary rocks -- how they are formed, their characteristics, and different types. All year we have been working on a large lapbook for this cour...
Gastric and Duodenal Ulcer Damage to Lining During normal digestion, food is chewed and swallowed, moving from the mouth through the esophagus and into the stomach. In the stomach, food is digested by hydrochloric acid and an enzyme known as pepsin. As the food continues through the gastrointestinal tract, it moves int...
Thirty years ago, about 90% of tonsillectomies in children were done for recurrent throat infection; now it is about 20% for infection and 80% for obstructive sleep apnea (OSA). What is a tonsillectomy? A tonsillectomy is a surgical procedure to remove the tonsils. Tonsils are two small glands located in the back of yo...
Throughout Hindu history there has been a noticeable inequality of the sexes; when considering how ancient the Hindu tradition is, it is only recently that reforms have been made in order to accommodate women as more equal to their male counterparts. One major area of life that has been under reformation when taking in...
Mesha Stela, circa 840 B.C.E. Louvre Museum, Paris. The Mesha Stela (a stela is an inscribed stone) was erected by King Mesha of Moab (modern day Jordan) as a record of his victory against Israel. The inscription is one of the earliest known nonbilbical references to Israel and attests to the rivalry between the Moabit...
A new paper by University of Calgary researchers, published today in PLoS ONE, demonstrates the edge given to prey in the space race by human activity. The research was conducted by two University of Calgary students, a University of Calgary Post-Doctoral Fellow and two University of Calgary professors from the Faculty...
Polar bears will see a population crash in most parts of the Arctic Ocean if global greenhouse gas emissions continue at current rates, according to a group of US scientists. A study led by US Geological Survey (USGS) biologists showed that a worldwide failure to reduce the release of atmospheric pollutants tied to the...
Smooth muscle is found in walls of hollow organs and structures of the body that need to be able to contract without conscious input from the brain. Examples include the stomach, intestines, womb, bladder and blood vessels, and it also controls the opening and closing of the pupils of the eye. Generally, smooth muscle ...
Share the post "Unique Reptiles Who Swam Like Penguins" Scientists have claimed to have solved a debate that began nearly two centuries ago that plesiosaurs, marine reptiles that thrived in the world’s seas when dinosaurs ruled the land, swam much like penguins by using their flippers to fly underwater, According to sc...
A monster forest fire that began in early May is still burning in Canada’s vast, isolated north woods. That may seem of little consequence to anyone other than the 88,000 residents of Fort McMurray forced to flee as the blaze swept into the northern Alberta city. Yet large fires like these matter immensely to the rest ...
Direct taxes are those paid directly to the collection agency, such as the IRS or a state tax board. They differ from indirect taxes in that there isn't a third party passing the tax on (as is the case in sales taxes, for example). That makes them simpler than indirect taxes, since fewer entities are involved and the t...
Paris, 17 Feb 2003 Our planet is warming up, and experts warn that the consequences will be serious. To see precisely how the process works, scientists need as much information as possible and from many different sources. There are valuable clues out in space. ESA's missions to Venus, Mars, and Saturn's moon Titan will...
An Overview of the Solar System The solar system consists of the Sun; the eight official planets, at least three "dwarf planets", more than 130 satellites of the planets, a large number of small bodies (the comets and asteroids), and the interplanetary medium. (There are probably also many more planetary satellites tha...
It's hard to believe, but sowbugs and pillbugs are more closely related to lobsters and crayfish than they are to insects. These soil-dwelling crustaceans belong to the Isopoda order. Sowbugs and pillbugs are similar in appearance and their names are sometimes used interchangeably. However, the sowbug has a pair of tai...
Breaking Down Racial & Gender Barriers The Reconstruction Era changed the face of Congress as African Americans—some of them former slaves—were elected to the U.S. House. Other freedmen were appointed or hired to serve as staff.60 Fourteen-year-old Alfred Q. Powell of Manchester, Virginia, is the earliest known Black A...
Were Neanderthals and Humans connected at some time in the past? This question is still up for debate, but recently the complete mitochondrial genome of a 38,000-year-old Neanderthal has been sequenced. At the Max-Planck Institute for Evolutionary Anthropology in Germany scientists have reconstructed the genome sequenc...
The Volstead act or Prohibition act took effect in 1920. In several states across America laws were already in place to halt the consumption of alcohol. These laws were in effect ahead of the 18th amendment (Volstead act, Prohibition act) was enacted before congress. New York was the first state to possess these laws p...
Beowulf (Old English: Bēoƿulf) was a legendary heroic dragon slayer of the Geats who lived from 495–583 AD. His exploits include slaying several sea reptiles and a terrestrial dragon called a grendel. Beowulf ultimately lost his life at the age of 88 from wounds he received while fighting a flying reptile that may have...
His famous "I Have a Dream" speech proclaimed a vision of equality and galvanized generations of Americans to fight against social and racial injustice. He was a leading activist in the American Civil Rights Movement. King was an inspirational force which led to nonviolent protests against segregation in the 1950s, inc...
Back To CourseBiology: High School 30 chapters \| 247 lessons \| 9 flashcard sets As a member, you'll also get unlimited access to over 55,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.Free 5-day trial Sarah has two Master's, one...
The tunica was precisely like the Greek chiton; that of the senator had two broad stripes of purple (latus clavus) down the centre, that of the knight two narrow stripes (angustus clavus). Dalmatica, tunica dalmatica), a liturgical vestment of the Western Church, proper to deacons, as the tunicle (tunicella) is to subd...
The filibuster is a tactic opposition members use to delay a government Bill if they object to it particularly strongly. The word comes from the Spanish filibustero, meaning "freebooter". In the 17th century a filibustero could be one of the pirates who invaded the West Indies, and in the mid-19th century, he could be ...
THE WORK ON THE PLANTATION (Close this window to return to the main contents) The estate land consisted of cane-land, provision grounds, woodland and pasture. Each planter preferred to have more than 200 acres of cane land. Provision grounds were used by the slaves to cultivate root crops, plantains and vegetables for ...
- What is ESD? - Review Process - Take Action - Professional Development - A project of This experiential learning resource introduces students to the world of macroinvertebrates and the factors that negatively impact wetlands. A game approach is used to explore the effects of pollution on aquatic macroinvertebrate spe...
In humans, puberty is the period of physical development when sexual reproduction can first take place. It is characterized by maturity of the sexual organs and the development of secondary sexual characteristics (such as the deepening of a boy's voice or the development of a girl's breasts). The beginning of menstruat...
Microbiology science project ideas include: how infectious diseases spread, how the immune system responds to a virus, how does penicillin fight bacteria, and how various disinfectants differ in killing a bacteria. Science fair is nearing and you want to present something that is unique and challenging. If you want to ...
This method is also known under the names Prussian, Classical or Traditional. It was called Prussian, because it began in Prussia at the end of the eighteenth century as the favoured methodology of the Prussian Gymnasien, after their expansion in the early years of the nineteenth century. It got the name Classical beca...
How well would your 5th graders do on the game show “Are You Smarter Than a 5th Grader?” Could they name the world’s major oceans, rivers, and lakes? What about the Native Americans? Can they name all of the major tribes? Fifth grade is a huge year. This transition year is where you use teaching strategies to delve dee...
This essay The Olmec Civilization has a total of 580 words and 3 pages. The Olmec Civilization The Olmec were Mesoamerica's first civilization. They were located in Laguna de los Cerros, tres Zapotes, San Lorenzo, La Venta, and the Tuxtla Mountains, in Mexico. The purpose of this report is to show how the Olmec lived, ...
1) Adolf Hitler remilitarized the Rhineland in 1936, and then in 1938, unified Germany with Austria and fomented unrest among German minorities in Czechoslovakia. But Western European countries, namely France and Great Britain, did not give any response to his actions despite the fact that he violated the Treaty of Ver...
Bio-based solar cell developed by the researchers in Germany by embedding the two proteins photosystem 1 and 2, which in plants are responsible of photosynthesis, into complex molecules developed in-house, thus creating an efficient electron current. In leaves, the photosystems 1 and 2 utilise light energy very efficie...
This species lived about 3 million years ago and is the first from the genus Australopithecus to be discovered outside of southern and eastern Africa. Background to discovery 3.5 to 3 million years old Important fossil discoveries Jaw and teeth remains were discovered in Bahr el Ghazal in Chad. The type specimen is an ...
Table of Contents \| Message Board \| Downloadable/Printable Version THEMES - THEME ANALYSIS The main theme of the novel, good vs. evil, is really the conflict of the plot. Much of the tale centers on the destructive power of evil. The initial evil of the story, and the one that causes all the action, is the institution ...
This week is National Robotics Week! It’s a great time to get to know robots—and design one yourself! It’s also a great time to revisit STEM and some great ways to incorporate these concepts into your classroom. It seems like every school year there is a new buzzword, everything from rigor to flipped classroom to grit....
Scientists working in East Africa say they've unearthed the oldest stone tools ever found. They were apparently made 500,000 years before the human lineage evolved. A team led by Sonia Harmand from Stony Brook University in New York found the tools in Kenya, near Lake Turkana. It's an area that's yielded numerous fossi...
Proxemics as you know is based quite often on the attachment to those surrounding an individual. We learn this tactic at a young age; to stay close to people we know and trust. As a result, we are begged the question at what point do our proxemics change? How does it change? And finally, what can we learn from this kno...
In economic terms, bees far outstrip butterflies and moths as pollinators. However, there are some plants that are exclusively pollinated by butterflies — especially some wildflowers and garden ornamentals — and several night-blooming species are specifically pollinated by hawkmoths. Butterflies and moths are members o...
Plants adapt to dry conditions in a variety of ways, but many respond to dry conditions by storing large quantities of water, which can be used in times of need. For example, cactuses store water in their trunks and stems, while aloe plants store water in their leaves. Additionally, plants that live in dry areas often ...
A parable is a figure of speech, an extended metaphor, a story using common actions or circumstances designed to illustrate a spiritual truth, a principle or a moral lesson. The word parable comes from the Greek word parabole, which means to place beside or side by side for the purpose of comparison. A parable can usua...
Stars are big balls of gas, and they shine because the gas inside is so hot that it causes nuclear fusion, which is the energy releasing process that people can see from earth. Nuclear fusion is where two individual atoms fuse and form a different atom.Continue Reading All stars are formed from the dust and gas that ar...
In 73 BC Spartacus , a Roman slave born in Thrace in 109 BC , was rebelled and he and his companions stood up for three years to the Roman legions who sought to stifle and It was called “revolt of the slaves” ; He died in 71 BC during the battle of Caposele , where his men were finally defeated by the legions of Pompey...
Health focuses on the relationship that exists among physical, mental, and social health. Students learn that their decisions affect all of these areas of health. They discover that the decisions they make can promote their health and their enjoyment of life now and in the future. Healthy decisions not only help preven...
REFORMAT is a FORTRAN90 program which reads an ASCII text file, and writes a copy, with the property that every line (except perhaps the last one) has the same number of values on it. This program was "inspired" by a situation in which the data in a file was not arranged as expected. It was assumed that there were 4 it...
A new fossil discovery suggests that giant tropical ants were roaming such far-flung places as Wyoming and Germany an estimated 50 million years ago. But how did these extinct species survive the trek across the icy land bridge that linked North America and Europe during the Eocene Epoch? Some 50 million years ago, gia...
The AP biology test is administered in the spring and can be a very intense tests for students. If you teach AP Biology, you’ve probably been including things in the curriculum to help students be successful on this test. The test also involves math calculations, where students must solve a problem and use a bubble for...
Day 1 Teaching Introduce The Genius of Leonardo Da Vinci, noting that he was an inventor. Share book to the top of spread 7 and make notes of facts discovered so far. Use the PowerPoint: Verbs and Tense, slides 1 to 6 to revise verbs and simple present and past forms. Easy: In pairs, children add missing verbs to sente...
Ground-Truthing: Awareness of Causes and Effects Thought Experiment 2.4.3 Erich Fromm argues that the essential requirement of choice is awareness. In Stanley Milgram’s psychology experiment that we just thought about, were the subjects aware that they could choose not to participate or that they could stop? What did t...
NCERT Solutions for Class 10 Science Chapter 4 Carbon and its Compounds What would be the electron dot structure of carbon dioxide which has the formula CO2? What would be the electron dot structure of a molecule of sulphur, which is made up of eight atoms of sulphur? (Hint – The eight atoms of sulphur are joined toget...
Sciaridae (or sciarids) are small (1 to 11 mm), blackish, brownish or yellowish flies with wings that are often dark (sometimes small or absent) and relatively long feet. Their eyes are close together or joined in the shape of a bridge above their antennae – except in wingless species. Unlike mosquitoes, their probosci...
The Colored Conventions movement brought together Black men and women from across the United States and Canada from 1830 through the 1890s. Together, participants mobilized and organized over the course of seven decades that included devastating anti-Black race riots, the growing popularity of the American Colonization...
At the location of the Earth Cache, you are looking at an eroded cliff in Hawkesbury Sandstone. This is an extensive rock formation that can be seen here as well as at sea level on the coast. It stretches north past Newcastle, and south past Bundanoon. It dates back to the Triassic age, when dinosaurs first roamed the ...
What is open water disposal? Open-water disposal is a state and federal approved dredged material disposal program where unconfined dredged material is placed at designated sites in oceans, estuaries, (a bay may be a large estuary) rivers and lakes in a manner that dredged material is not isolated from the adjacent wat...
IB Chemistry/Oxidation and Reduction< IB Chemistry Oxidation refers to the loss of electrons, while reduction refers to the gain of electrons. A full reaction will have a net change of 0 electrons, meaning that the amount of electrons lost in one portion of the equation will equal the amount of electrons gained in anot...
In this fun vegetable themed learning packet, kids practice counting to 10, understanding one-to-one correspondence, finish a simple writing prompt, and learn the names of familiar vegetables. The "Tops and Bottoms" chart lets the student sort vegetables by whether we eat the part of the plant that grows on top of the ...
Reading and comprehension are important skills for primary school students. To help your child become a more effective reader try some of these strategies. Predicting – use information from the text, images or your own experience to try and predict what might happen next, how characters might react or what the outcome ...
We know that Mars lost an ocean of water, but what was the exact mechanism? We also know that the magnetic field of Mars was lost a long time ago, and contributed to this major loss of water and atmosphere. In a press conference today, NASA officials working with data from the Mars Atmosphere and Volatile Evolution (MA...
By Blaise Jones When you look at a fish, a shark, and a whale, you might think that they are so similar that they all must be closely related, but that’s far from true. While sharks and fishes may be related, whales are mammals. This means they are warm-blooded, give birth to live offspring, and breathe air. Whale-spec...
Links to 6+1 Resources About 6 + 1 Trait Writing - Please read below In the early 1980's, creative teachers in school districts across the country decided there must be a better way to gather useful information about student writing performance than with single scores or standardized tests. They wanted an instrument th...
A graphics processing unit (GPU) is a computer chip that performs rapid mathematical calculations, primarily for the purpose of rendering images. In the early days of computing, the central processing unit (CPU) performed these calculations. As more graphics-intensive applications such as AutoCAD were developed, howeve...
In physics a wave is a disturbance or oscillation that travels through space and matter, accompanied by a transfer of energy. Wave motion transfers energy from one point to another, often with no permanent displacement of the particles of the medium—that is, with little or no associated mass transport. They consist, in...
Our Historical City Benard de la Harpe, a Frenchman leading an exploration party up the Arkansas River on April 9, 1722, noted the first outcropping of the rock he had seen along the banks since leaving New Orleans. He reportedly called it 'la petite roche' or 'the little rock,' to distinguish it from a larger cliff ac...
By Sally Pearsall Ericson Director of Marketing and Public Relations Jack LeCroy, an Urban Regional Extension Agent with the Alabama Cooperative Extension System, gave a presentation about pollinators as part of the 2019 Wonderful Wednesdays series at Bellingrath Gardens and Home. Here are a few highlights from his pre...
Exposing students to STEM experiences can be an extremely engaging and effective way to foster the skills they will need in a global, competitive workplace. But don’t save these activities for science or math class. You can incorporate STEM learning tools in all core content areas to encourage critical thinking, collab...
C++ for beginners: An Introduction to escape Sequences Escape sequences are special characters used in control string to modify the format of an output. These specific characters are translated into another character or a sequence of characters that may be difficult to represent directly. For example, you want to put a...
This KS3 ICT quiz look at data capture which is all about collecting information, turning it into data and entering it into a computer. Capturing of data can be done in various ways; the best method depends on the type of data that you need to gather and what you want to do with it. In some cases, you might store it in...
Geography is introduced in the Early Years Foundation Stage (EYFS) through the area of learning ‘Understanding the World’. Children are introduced to looking closely at features of their own environments as well as comparing these to the wider world. Children partake in lots of outdoor experiences to gain a practical u...
Act of Congress facts for kids An Act of Congress is a statute enacted by the United States Congress according to the powers granted to it by the Constitution of the United States. The term can be used in other countries with a legislature called a "Congress," such as the Congress of the Philippines. But most often the...
Ask an educator to reflect upon their first STEM related activity. The majority of teachers would share that it had something to do with supporting National Engineers week or some kind of science fair. These are great places to get started with STEM but not the only place to integrate and incorporate STEM in the classr...
A quick and surprising experiment that combines friction, forces and the center of gravity. Suitable especially to recap and connect these topics before moving on to another chapter. Linking friction, weight and the center of gravity. Observing how different physical effects can play together to keep a system in balanc...
- from Earthquakes Earthquakes have always happened on this planet. They’ve been shaking the Earth for all 4.6 billion years of its existence. Although today’s scientists have learned a lot about them, earthquakes are still difficult to predict and impossible to control. Today, most scientists think that earthquakes ha...
Black Holes are classical gravity objects as predicted by solutions of the Einstein-Hilbert Field equations. They carry the form: which goes wrong when . This point is called the "horizon" of the black hole. At this point (where r is measured from the black hole) the metric becomes all space-only and the time coordinat...
Are you someone who wears spectacles? If not, then you’ve definitely seen people with spectacles somewhere, sometime. Some of us need spectacles to see clearly. But what’s really behind the whole blur? Why are we not able to see? It’s because our eyeball changes its shape sometimes. And this is called a refractive erro...
In a follow up to my last post about reading to your child, I thought I would include an article I received in my latest Total Learning newsletter about developing numeracy skills in your young child (Total Learning is a book selling business that I am a consultant for). Numeracy – Early Years Children develop numeracy...
A primer on genome sequencing The genome of an organism consists of one or more stretches of DNA, which can be thought of as strings of the letters A, T, G and C. A particular string of DNA letters is called a sequence. DNA letters are also known as bases. Because DNA is a double helix, consisting of pairs of bases, th...
Arguably Spain's most famous painter, the cubist, Salvador Dalí, was known for painting mind-altering images such as melting clocks and timepieces. Though many of his paintings contained subtle and profound meanings and symbolism, on the surface, the Spaniard's paintings can simply seem downright confusing. While Dalí ...
Frequencies and probabilities Here I present another way to describe your data, by frequencies and probabilities. This gives a graphic overview of your entire data set, which is helpful in determining the distribution of the values you have observed. The frequency table and histogram I think the frequency table and his...
To engage your child’s mind, occupy their hands. Most children learn more effectively when they participate in activities, rather than just listening to lectures. While this has been true for years, it may be even more important today, given the hours children spend sitting passively in front of computers and televisio...
This week is all about revision as we revisit everything that we’ve learnt so far during the second term. In Maths you will count in fives and tens, focus on Mental Maths, make groups, and do a story sum. In Phonics you will write a quick test, and then read this week’s story. Then for writing, you will sequence senten...
Enter a futuristic world where all manner of emotions are nonexistent. Students imagine a future and how different it will be to their present. Provide writing prompts that encourage students to make strong text connections. Explain Jonas' mindset when he brought home the apple, an act that is forbidden in this society...
The different parts of a map Becoming familiar with the elements of a map makes it easy to switch between different map types and become comfortable with reading and interpreting a large amount of data. In general, maps contain a grid by which points can be referenced, a scale bar for relating the map to the physical w...
A jolting collision between Mercury and a large planetesimal in the solar system’s formative years could have left the planet unusually dense, according to a new simulation. And as much as 16 million billion tonnes of the material kicked up by the impact might have rained down on the proto-Earth. Jonathan Horner and co...

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