Moderate
In natural ecosystem, decomposers include:
Correct answer: D. Only bacteria and fungi
- A. Only two types of organisms
- B. Only two types of organisms plus macroscopic animals
- C. Only microscopic animals
- D. Only bacteria and fungi
Explanation
In the standard ecological classification, decomposers are chiefly microorganisms such as bacteria and fungi that chemically break down dead organic matter. Animals that fragment litter are usually called detritivores rather than decomposers in this narrow usage.
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