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What is composed of a calcium cation and a nitrate anion?
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calcium nitrate
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sciq
|
What is the term for the hard covering that protects insects, crustaceans, and spiders?
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exoskeleton
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sciq
|
Reaching conclusions about unobserved things on the basis of what has already been observed is known as what kind of reasoning?
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inductive
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sciq
|
What man-made substance tends to break down ozone in the stratosphere?
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cfcs
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sciq
|
What consists of a nitrogen atom bonded to some combination of carbons and hydrogens?
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an amine
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sciq
|
A few earthquakes take place away from plate boundaries, these are called what?
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intraplate earthquakes
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sciq
|
What is the science of classifying living things is called?
|
taxonomy
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sciq
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What is the branch of science that studies the physical world?
|
physics
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sciq
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Are birds and mammals mainly exothermic or endothermic?
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endothermic
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sciq
|
What do you call scientists that study the weather, specifically?
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meteorologists
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sciq
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Covering about 16 percent of the moon's surface, maria are dark, solid, flat areas consisting of what substance?
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lava
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sciq
|
Where does most geologic activity take place?
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plate boundaries
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sciq
|
A mold is an imprint of an organism left in what?
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rock
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sciq
|
The hexapoda subphylum includes mainly what type of animal?
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insects
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sciq
|
What areas of the planet are most birds native to?
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tropical
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sciq
|
What term is used to describe is the increased or decreased speed of movement of an organism in response to a stimulus?
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orthokinesis
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sciq
|
What diagnostic technology uses high-frequency vibrations transmitted into any tissue in contact with the transducer?
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ultrasound
|
sciq
|
Groundwater dissolves minerals and carries the ions in a what?
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solution
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sciq
|
Which ocean zone is the narrow strip along a coastline that is covered by water at high tide and exposed to air at low tide?
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intertidal zone
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sciq
|
What do the muscles of the gastrointestinal tract do?
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keep food moving
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sciq
|
What is a thin layer of gas that surrounds earth called?
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the atmosphere
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sciq
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What is the name for the nonliving parts of ecosystems?
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abiotic factors
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sciq
|
What are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts?
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electromagnets
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sciq
|
An endocrine disease usually involves the secretion of too much or not enough of what?
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hormone
|
sciq
|
What occurs when hot magma transforms rock that it contacts?
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contact metamorphism
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sciq
|
What do the planets orbit around in the solar system?
|
the sun
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sciq
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Structural rearrangements of what include partial duplications, deletions, inversions, and translocations; duplications and deletions often produce offspring that survive but exhibit physical and mental abnormalities?
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chromosomes
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sciq
|
In iceland, the mid-atlantic ridge is above sea what?
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level
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sciq
|
What is it called when two species evolve matching traits?
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coevolution
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sciq
|
What do neurons pass to the next neuron?
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neurotransmitters
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sciq
|
Where do polychaete worms live?
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the ocean floor
|
sciq
|
Opposite charges attract and like charges do what?
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repulse
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sciq
|
How thick is the earth's continental crust, on average?
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35 kilometers
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sciq
|
What are carbonated beverages pressurized with?
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co2
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sciq
|
Why do mangrove trees rise high above the water? which characteristic help them to do so?
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stilt like roots
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sciq
|
When volume does not change, temperature is proportional to what other property?
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pressure
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sciq
|
What sac, which was sitting on top of the flat embryo, envelops the embryo as it folds?
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amniotic sac
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sciq
|
In vascular plants, do primary roots grow downward or to the side?
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downward
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sciq
|
Not even light can escape from what extremely dense object sometimes found in deep space?
|
black holes
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sciq
|
What is a soft connective tissue inside pores and cavities in spongy bone?
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bone marrow
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sciq
|
The conservation of momentum principle can be applied to systems as different as a comet striking earth and a gas containing huge numbers of atoms and these?
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molecules
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sciq
|
How many atoms are evenly organized around a central atom?
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six
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sciq
|
What is the protist kingdom sometimes called as?
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trash can kingdom
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sciq
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What is the main difference between prokaryotic and eukaryotic cells?
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presence of a nucleus
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sciq
|
In glycolysis, glucose is split into two molecules of pyruvate. this results in a net gain of?
|
two atp molecules
|
sciq
|
What is the functional unit of compact bone?
|
osteon
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sciq
|
What is the transition from liquid to gas is called?
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boiling
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sciq
|
Canoe paddles, nutcracker, and hammer are examples of what type of simple machine?
|
lever
|
sciq
|
What happens to the density of air as the altitude decreases?
|
decreases
|
sciq
|
What is the diffusion of water molecules across a semipermeable membrane?
|
osmosis
|
sciq
|
What property of fluids causes something to stay on or near the surface of water?
|
buoyancy
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sciq
|
What term refers to entities, events or powers regarded as being beyond nature, and cannot be explained by scientific means?
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supernatural
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sciq
|
What is the distinctive shape of the molecule that contains genetic information?
|
spiral
|
sciq
|
What must people with type 1 and type 2 diabetes frequently check?
|
blood glucose levels
|
sciq
|
What consists of the different species within an area?
|
biological community
|
sciq
|
What type of resource cannot be replaced as easily as it is consumed?
|
nonrenewable
|
sciq
|
What is the smallest contractile portion of a muscle?
|
sarcomere
|
sciq
|
What types of bonds hold together positive metal ions and their valence electrons?
|
metallic bonds
|
sciq
|
Where are all hormones secreted into before entering the circulatory system?
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interstitial fluid
|
sciq
|
What is made of gases that are essential for photosynthesis and other life activities?
|
atmosphere
|
sciq
|
What is the type of mining called when materials are removed along a strip?
|
strip mining
|
sciq
|
What is the name of the organelle that helps make and transport proteins and lipids?
|
endoplasmic reticulum
|
sciq
|
Clearing land for agriculture and development is a major cause of what negative result?
|
habitat destruction
|
sciq
|
Chemical reactions always involve what?
|
energy
|
sciq
|
What layer covers the bones that make them look tough, shiny, and white?
|
periosteum
|
sciq
|
What type of vertebrates are birds?
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endothermic tetrapod
|
sciq
|
What item starts puberty in girls?
|
the hypothalamus
|
sciq
|
Huge calderas form when the mountain above an empty chamber of what collapses?
|
magma
|
sciq
|
What do ecosystems require constant inputs of?
|
energy
|
sciq
|
What is a capillary bed that filters blood principally based on particle size?
|
glomerulus
|
sciq
|
What do covalent bonds give atoms a more stable arrangement of?
|
electrons
|
sciq
|
Prokaryotic cells do not have a nucleus but instead generally have a single chromosome, a piece of double-stranded dna located in an area of the cell called the what?
|
nucleoid
|
sciq
|
The vas deferens and ejaculatory ducts transport sperm from the epididymes to the urethra in what system?
|
male reproductive system
|
sciq
|
What is the initial stage of scienetific investigations?
|
observation
|
sciq
|
What type of change has occurred when a copper penny changes color?
|
chemical change
|
sciq
|
Neutrons and protons reside in which part of the atom?
|
nucleus
|
sciq
|
What type of cells make up the epidermis of a leaf?
|
dermal cells
|
sciq
|
What term describes diseases caused by abnormal cells in the body dividing uncontrollably?
|
cancer
|
sciq
|
What term is used to describe the ability of matter to burn?
|
flammability
|
sciq
|
We would genetically be all the same if genes did not have different what?
|
alleles
|
sciq
|
Why does water infiltrate the ground?
|
because soil and rocks are porous
|
sciq
|
Humans need lipids for many vital functions such as storing energy and forming what?
|
cell membranes
|
sciq
|
What occurs when groups from the same species stop mating because of something other than physical or geographic separation?
|
sympatric speciation
|
sciq
|
Carboxylic acids are weak acids, meaning they are not 100% ionized in what?
|
water
|
sciq
|
In which area does conduction mainly happen?
|
lower atmosphere
|
sciq
|
Solid-state radiation detectors convert ionization produced in a semiconductor (like those found in computer chips) directly into what?
|
electrical signal
|
sciq
|
How do oceans help control global warming?
|
absorbing carbon dioxide
|
sciq
|
Which gas is released by the group of archaea known as methanogens?
|
methane
|
sciq
|
What is the limiting factor for bacteria in a dish?
|
space
|
sciq
|
Dna encodes instructions for what kind of molecules?
|
proteins
|
sciq
|
Present-day plants that have a complex vascular tissue system are called what kind of plants?
|
vasuluar plants
|
sciq
|
Knees and elbows are examples of what part of the skeletal system?
|
joints
|
sciq
|
The barrier defenses are not a response to infections, but they are continuously working to protect against a broad range of what?
|
pathogens
|
sciq
|
What does the esophagus produce for lubrication?
|
mucous
|
sciq
|
What is it called when your joints start to wear out and they become stiff and painful?
|
arthritis
|
sciq
|
What does phagocytosis defend the body from?
|
pathogens
|
sciq
|
The smallest and lightest alcohols (methanol, ethanol, propanol) are completely soluble in?
|
water
|
sciq
|
When skunks are in danger what do they give off?
|
foul smell
|
sciq
|
Sulfur can combine with oxygen to produce what?
|
sulfur trioxide
|
sciq
|
What are large vesicles derived from the endoplasmic reticulum and golgi apparatus?
|
vacuoles
|
sciq
|
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