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

Science Definition 3

biodiversity the variety of life in the world or in a particular habitat or ecosystem.
keystone species a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically
gene a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring
extinction no longer in existence
endangered species a species of animal or plant that is seriously at risk of extinction
threatened species any species which are vulnerable to endangerment in the near future
habitat destruction the process by which natural habitat is rendered incapable of supporting its native species
habitat fragmentation the process by which habitat loss results in the division of large, continuous habitats into smaller, more isolated remnants
poaching the illegal practice of trespassing on another's property to hunt or steal game without the landowner's permission
captive breeding the process of maintaining plants or animals in controlled environments, such as wildlife reserves, zoos, and botanic gardens
Created by: 24norahblecher