Home Biology Ecosystem Nutrient Cycling and Ecosystem Services (NIS) Cycling of material in ecosystem is entirely…
Biology Ecosystem Nutrient Cycling and Ecosystem Services (NIS) Single Correct MCQ
Published on: August 11, 2026

Cycling of material in ecosystem is entirely dependent upon

A
Producers and consumers
B
Primary producers and herbivores
C
Herbivores and carnivores
D
Producers and decomposers

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The correct answer is:
D

Material cycling in an ecosystem depends mainly on producers (which convert inorganic substances into organic matter) and decomposers (which break down dead organisms and return nutrients to the environment). Together, they maintain continuous nutrient recycling.

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