Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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 email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
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


overview of nitrogen & phosphorus cycle

process by which nitrogen is returned to the atmosphere from the soil by bacteria denitrifiation
rock cycle or sedimentary biogeochemical cycle phosphorus
breakdown organic matter to release nitrogen or other elements for use by plants & animals decomposers
found in teeth and bones of animals and in ocean sediments & rocks phosphorus
where nitrogen fixing bacteria are found in the root nodules of legumes
What does the atomic number represent? the number of protons
process by which bacteria take nitrogen from the air and convert it into a form useable by plants nitrogen fixation
in addition to the bacteria in soil and in the roots of legumes, this occurence can fix nitrogen in the atmosphere lightning
bacteria, legumes and decomposers all have a direct role in this cycle nitrogen
the atmosphere is what percent nitrogen 78
What is a major reservoir of nitrogen the atmosphere
excessive use of fertilizers can cause this in our waterways algal blooms
What are the consequences of an algal bloom? lots of algae, little or no oxygen, fish kills
When algal blooms occur in our waterways, we know this process is underway eutrophication
nutrient pollution (nitrogen & Phosphorus) eutrophication
anything introduced into an ecosystem that causes harm to organisms pollution
example of pollution we have studied recently eutrophication by excess fertilizer use
Created by: mrstolan