Apentix/AP Biology/Unit 8: Ecology/Question
AP Biologymediummcq1 pt

Why are decomposers important to nutrient cycling in ecosystems?

A.They convert organic matter in dead organisms and waste into forms that return nutrients to abiotic reservoirs and can be reused
B.capture sunlight for the ecosystem
C.add energy to food chains
D.compete with top predators

Explanation

Core Concept

Decomposers such as bacteria and fungi break down dead organic matter and waste, returning nutrients to soil, water, and other abiotic reservoirs where they can reenter food webs. This recycling role applies across terrestrial and aquatic ecosystems.

Correct Answer

AThey convert organic matter in dead organisms and waste into forms that return nutrients to abiotic reservoirs and can be reused

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