Larger consumers eat smaller consumers, who eat producers or decayed matter {food chain}|. Producer number and mass must be larger than consumer number and mass. Food chains can start with microorganisms grazing on decayed matter. Visible organisms eat zooplankton. Larger organisms are at food-chain top.
Smaller organisms have higher metabolism per gram. Plants use 3% of received light. Animals use 5% to 10% of food.
Biological Sciences>Ecology>Community>Food Chain
4-Ecology-Community-Food Chain
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Date Modified: 2022.0224