AP Environmental Scienceeasymcq1 pt
Decomposers are critical to ecosystems because they
A.return nutrients from dead organic matter to the soil
B.capture sunlight for the food web
C.add new energy to the system
D.occupy the top trophic level
Explanation
Core Concept
Bacteria and fungi mineralize corpses and litter, releasing nitrogen and phosphorus that producers need — closing the nutrient cycles.
Correct Answer
Areturn nutrients from dead organic matter to the soil
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