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.
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



organism A living thing.
habitat An environment that provides the things a specific organism needs to live, grow, and reproduce.
biotic factor A living or once living part of an organism's habitat.
abiotic factor A nonliving part of an organism's habitat.
species A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
population All the members of one species living in the same area.
community All the different populations that live together in a particular area.
ecosystem The community of organisms that live in a particular area, along with their nonliving environment.
ecology The study of how organisms interact with each other and their environment.
birth rate The number of births per 1,000 individuals for a certain time period.
death rate The number of deaths per 1,000 individuals for a certain time period.
immigration Movement of individuals into a population's area.
emigration Movement of individuals out of a population's area.
population density The number of individuals in an area of a specific size.
limiting factor An environmental factor that causes a population to decrease in size.
carrying capacity The largest population that a particular environment can support.
Created by: IsabellaDay