Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

change over time

TermDefinition
Species a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
Evolution the process by which animals, plants, and other living organisms are transformed into different forms
Fossil the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock
Adaptation the action or process of adapting or being adapted
Scientific theory a comprehensive, well-substantiated explanation of some aspect of the natural world that is based on a body of facts
Natural selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring
Competition the activity or condition of competing
Sexual selection a form of natural selection where individuals with certain inherited traits
Coevolution the process where two or more species reciprocally affect each other's evolution
Fossil record the record of the occurrence and evolution of living organisms through geological time as inferred from fossils.
Embryo the early stage of a developing organism, formed after a fertilized egg
Homologous structures physical features in different species that share a common evolutionary ancestor
Extinct (of a species, family, or other group of animals or plants) having no living members; no longer in existence.
Vestigial organs degenerate or underdeveloped structures in an organism that have lost most or all of their original, ancestral function through evolution
Molecular clock a scientific tool used to estimate the timing of evolutionary events, such as when species diverged from a common ancestor
Relative dating a method used in geology and archaeology to determine the chronological order of past events
Absolute dating a scientific technique used in archaeology and geology to determine the specific numerical age
Created by: Drake_
 

 



Voices

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:
Retries:
restart all cards