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Science TNSB Mentoring
Class 9
Environmental science
Water cycle and Nitrogen cycle
3.
Components of nitrogen and carbon cycle
Question:
2
m.
Choose the correct answer
:
1
.
Reduction of nitrate ions to gaseous nitrogen is called __________.
denitrification
ammonification
nitrogen assimilation
nitrification
2
.
During photosynthesis, plants release __________ into the atmosphere.
nitrogen
carbon monoxide
carbon dioxide
oxygen
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