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Science CBSE Homework Assignments
Class 8
Microorganisms: Friend and Foe
Nitrogen fixation
2.
Nitrogen cycle
Question:
4
m.
Complete the following cycle given as figure by filling the boxes (a), (b), (c), (d).
a.
b.
c.
d.
Answer variants:
Bacteria convert nitrogen compounds into gas.
Bacteria and blue-green algae fix atmospheric nitrogen.
N-waste from excretion and death.
Light fixes nitrogen.
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