AP Biology· difficulty 1/5
Producers (autotrophs) make their own food primarily by
Decomposition of dead material (or absorption from soil minerals)
Cellular respiration (or fermentation in oxygen-poor environments)
Ingestion of consumers (or scavenging in nutrient-rich habitats)
Photosynthesis (or chemosynthesis in some prokaryotes)
Explanation
Producers convert solar (or chemical) energy into biomass, forming the foundation of food webs.
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