A) Solar energy fixation and nutrient cycling
B) Decomposition of organic matter and photosynthesis
C) Nitrogen-fixation and decomposition of organic matter
D) Carbon assimilation and nitrogen-fixation
Correct Answer: C
Solution :
If microbes are removed from a forest ecosystem, nitrogen-fixation and decomposition of organic matter will be high affected. There are many nitrogen-fixing microbes involved in biological nitrogen-fixation. Bacteria and fungi secrete enzymes to degrade organic matter into simpler inorganic substances.
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