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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Biogeochemical cycle

photosynthesis the process of carbon dioxide being fixed into sugar molecules with the use of sunlight
cellular respiration the process of breaking down sugar to release energy that also produces carbon dioxide
decomposition the breakdown of organic material by bacteria and fungi to release nutrients back to the soil including carbon and nitrogen
evaporation the process of surface water vaporizing and changing from a liquid to a gas
precipitation the product of condensation of water vapor that falls to the ground
transpiration the process where liquid water travels through plants to small pores under the leaves and vaporizes being released to the atmosphere
condensation the change of state of water from a gas to a liquid usually occurring in the atmosphere creating clouds.
ground water water beneath the earth's surface
denitrifying bacteria bacteria that convert nitrates in the soil to atmospheric nitrogen.
nitrifying bacteria bacteria that convert ammonia to nitrates which can be used by plants and other organisms.
legume a group of plants that can convert atmospheric nitrogen to nitrates because of associated nitrogen fixing bacteria in their root nodules.
nitrogen fixation the process in which atmospheric nitrogen is converted into ammonia
Created by: jhaase



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

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