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

vocab review

chp 6

TermDefinition
adaptation the process by which individuals are better adapted to there enviroment
variontion difference berween individuals of the same species
half life the time it takes for half of the atoms ina sample to decay
scientific observation a well tested concept that explains a wide range of observation
graduism the theory that species evolve during short burts of time
fossil record Documentation of millions of fossils scientists have collected over time
radioactive elements similar structures that related specieshas decayed or break down into different elements
homologus structure similar stuctures that related species have inherited from common
mold a hollow space leftwhere the fossil has decayed or dissolved
relative dating a precess comparing the age of two fossilsby their placement in the layers of sedimentary
evolution Gladul changeesun a species overtime
perified fossils fossils that are buried in sedment and actually changed to rock
adaptation a trait that helps an organismsurviveand reproduce
graduanlium the theory that evolution occurs slowly but steadily
branchry tree a diagram that shows how scientists think diffrent groups of orgsnisms are related
relative dating a process that teststhe radioactive materials within a fossils to tell its actual age
petrimide fossils preserved remains of an organism that lived in the past
extinction when no member of the speciesis still alive
competition This is a factorin natural selectio as organisms attemot to survive using limited resources
species a group of organisms that can mate and make an offspring
homologus structure evidence that related species had a common ancestor becauseof the way their bodies are anaiomically in similar ways
over production this factorin natural selection happens when there are moreoff springs than possibly survive on given resources
Created by: 22hjenicek
 

 



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