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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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

Grade 8 Ch E2

Science Explorer Environmental Science Ch 2

biotic factor a living (or once living) part of an organisms’ habitat
abiotic factor a nonliving part of an organism’s habitat
population all the members of one species in a particular area
community all the different populations that live together in an area
ecology the study of how living things interact with each other and their environment
immigration entering a population
emigration leaving a population
population density the number of individuals in an area of a specific size
limiting factor an environmental factor that causes a population to decrease
carrying capacity the largest population that an area can support
symbiosis a close relationship between two species that benefits at least one of the species
mutualism a relationship between two species in which both species benefits
commensalism a relationship between two species in which one species benefits and the other is neither helped nor harmed
parasitism a relationship in which one organism lives on or in a host and harms it
primary succession the series of changes that occur in an area where no soil or organisms exist
pioneer species the first species to populate an area
secondary succession the series of changes that occur in an area where the ecosystem has been disturbed but where soil and organisms still exist
Created by: DawnSimpson