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The ultimate source of nitrogen is |
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a) |
Atmospheric nitrogen |
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b) |
Nitrogen present in soil |
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c) |
Nitrogen that comes from water |
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d) |
Nitrogen fixed by the process of photosynthesis |
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The ultimate source of nitrogen is |
|
|
a) |
Atmospheric nitrogen |
|
b) |
Nitrogen present in soil |
|
c) |
Nitrogen that comes from water |
|
d) |
Nitrogen fixed by the process of photosynthesis |
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(a) The ultimate source of nitrogen is atmosphere |