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.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

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

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

Foreman/Kerley wk 32

Competition/Environmental Changes

ecosystem a system composed of all the biotic and abiotic factors in an area and all the interactions among them (Great Plains grasslands)
abiotic factors factors that are neither living nor produced by living things
biotic factors factors that are living or produced by living things
intraspecies competition more than one individual in an ecosystem relies upon the same limited resources (several squirrels in one pecan tree)
interspecies competition more than one population in an ecosystem relies upon the same limited resources (squirrels and birds in the same tree)
biome a large region of the world that has similar organisms, which are adapted to the terrain and climate of that region (grassland)
long-term environmental change environmental change that occurs slowly over time and affects organisms over generations (temperature changes)
short-term environmental change an environmental change that happens quickly but does not last a long time (hurricane)
extinct describes the permanent disappearance of a species from Earth
adaptation A process by which a population becomes better suited to its environment by increasing the frequencies of alleles that provide benefits to survival and reproduction
pollutants harmful substances that contaminate a natural environment
climate average weather conditions for a region over many years
behavioral adaptation responses made by an organism that help it to survive/reproduce (nesting behaviors)
physiological adaptation a body process that helps an organism to survive/reproduce (e.g. hibernation)
structural adaptation a feature of an organism’s body that helps it to survive/reproduce
Created by: foremanh71