Cycle Flashcards
1
Q
Atmosphere:
The gas, (The air) surrounding the earth . 78% of the atmosphere is made up of Nitrogen or N2, this is an unusable form for most organisms.
A
2
Q
Nitrogen:
An element that all living organisms require, (DNA, proteins, chlorophyll) however, cannot be used in the form that surrounds the Earth
A
3
Q
NItrogen fixation:
The process of converting N2, unusable nitrogen, into biologically available nitrogen.
A
4
Q
Nitrification:
There are two steps to nitrification. The first step is microbes change ammonia to nitrites (an unusable form of nitrogen for plants).The second step is is to change the nitrites into nitrates (a useable form of nitrogen for plants).
A
