52. Ecosystems
Ecosystems
Multiple Choice
Multiple ChoiceWhich of the following is true of the nitrogen cycle?
A
Bacteria are not involved in the process.
B
Plants can take in and use atmospheric nitrogen through their leaves.
C
Some animals can use inorganic forms of nitrogen such as ammonium.
D
When plants and animals die, the nitrogen within their bodies becomes unavailable.
E
Nitrite is converted to nitrate (NO3–) by nitrifying bacteria.
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