Chapter 28 - Biogeochemical Cycling

Question 0

this is the largest source of carbon dioxide released to the atmosphere

Answer 0

microbial decomposition

Question 1

cycles between organic forms and inorganic forms of carbon

Answer 1

carbon cycles

Question 2

conversion of atmospheric N2 into NH3 or NH4

Answer 2

nitrogen fixation

Question 3

process of converting nitrogen from NH3 towards NO3-

Answer 3

nitrification

Question 4

process of converting nitrogen from NO3 towards NH3

Answer 4

denitrification

Question 5

process of removing the amino group and producing NH3

Answer 5

ammonification

Question 6

process of incorporation of nitrogen into organic molecules in living organisms

Answer 6

nitrogen assimilation

Question 7

two major nitrifying bacteria in nature

Answer 7

nitrosomonas, nitrobacter