Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Science review

Mold a distinctive and typical style, form, or character.
Cast fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions
Carbon Film an organism outline of a fossil
Trace Fossils a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
Preserved Remains a prehistoric organism or is slang for someone or something that is old and outdated
Catastrophic very harmful or disastrous
Uniformitarianism the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes
stratigraphy the branch of geology concerned with the order and relative position of strata and their relationship to the geological time scale
law of superposition each layer being younger than the one beneath it and older than the one above it
Relative Age a guess on something/someone's age
Index Fossil a fossil species that characterizes and is used to delimit a geological zone
Absolute Age geologic age of a fossil, or a geologic event or structure expressed in units of time, usually years
Radiometric Dating a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample
Halflife the time required for one half the atoms of a given amount of a radioactive substance to disintegrate
Energy Objects can have energy by virtue of their motion
Work using a force to move an object a distance
Power the rate (energy amount per time period) at which work is done or energy converted
Renewable Resource that can or will be replenished naturally in the course of time
Nonrenewable Resource a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption
Fossil Fuels a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms
Combustion Power Plant Somewhere where they control power
Disease a disorder of structure or function in a human, animal, or plant, especially one that produces specific signs or symptoms or that affects a specific location and is not simply a direct result of physical injury
Infectious Disease They're normally harmless or even helpful, but under certain conditions, some organisms may cause disease
Noninfectious Disease a medical condition or disease that is not caused by infectious agents
Pathogen a bacterium, virus, or other microorganism that can cause disease
Vector how fast something is moving and in what direction it is moving
Host Cell an animal or plant on or in which a parasite or commensal organism lives
Replication The process by which genetic material, a single-celled organism, or a virus reproduces or makes a copy of itself
Mutation the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA
Antibody a blood protein produced in response to and counteracting a specific antigen
Antiviral Drugs a class of medication used specifically for treating viral infections
Vaccine a substance used to stimulate the production of antibodies and provide immunity against one or several diseases
Antibiotics a medicine (such as penicillin or its derivatives) that inhibits the growth of or destroys microorganisms
Toxins an antigenic poison or venom of plant or animal origin, especially one produced by or derived from microorganisms and causing disease when present at low concentration in the body
Endospores a resistant asexual spore that develops inside some bacteria cells
Epidemic a widespread occurrence of an infectious disease in a community at a particular time
Pandemic prevalent over a whole country or the world
Variation any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences
Natural Selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring
Adaption The adjustment or changes in behavior, physiology, and structure of an organism to become more suited to an environment
Camouflage hide or disguise the presence
Mimicry the close external resemblance of an animal or plant (or part of one) to another animal, plant, or inanimate object
Comparative biology The comparative approach also has numerous applications in human health
Homologous structure an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor
Analogous structure different species having the same function but have evolved separately, thus do not share common ancestor
Vestigial structure A structure in an organism that has lost all or most of its original function in the course of evolution, such as human appendixes
Taxonomy the branch of science concerned with classification, especially of organisms; systematics
linnaean classification plants and animals have traditionally been classified by the structure of their bodies
Created by: Aniyah13



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards