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

biology -jenika-

what in the environment can filter out poisons in the water? draining wetlands
birth rate is an example of what factor ? biotic factor
what is it called when population neither increases or decreases? equilibrium
whats a glucose? a type of sugar
what makes up acid rain? sulfuric acid and nitric acid
what percentage does ozone layer reflects for the U.V rays back into space? 30%
the warming of the earth is called what effect ? global effect
whats aerobic? a process that uses oxygen
what type of energy gets trapped by the greenhouse gases? infrared
what protects the leaf and makes it waterproof? waxy cuticle
Created by: jenika