The living organisms of all ecosystems collectively constitute:
Correct answer: D. Biosphere
- A. Producers
- B. Decomposers
- C. Consumers and decomposers
- D. Biosphere
Explanation
The biosphere is the global zone containing life and all ecosystems, so it collectively includes the living organisms found in them. Producers, consumers and decomposers are functional groups within ecosystems, not the collective name for all ecosystems and their life.
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