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Chapter 2 Lesson 1 » Producer ˃ Energy comes into most ecosystems in the form of sunlight ˃ Organisms that can use the energy of sunlight to make food via photosynthesis are producers (plants, algae) » Consumer ˃ ˃ ˃ ˃ ˃ Consume other organisms as a source of energy Herbivores – eat only plants (cow) Carnivores – eat only animals (coyote) Omnivores – eat plants and animals (bear) Scavenger – carnivore that feeds on the bodies of dead organisms (vulture) » Decomposer ˃ Break down biotic wastes & dead organisms returning raw materials to the ecosystem (bacteria, fungus) » Energy moves through an ecosystem when one organisms eats another » Food Chain ˃ Series of events where one organism eats another obtaining energy ˃ Shows only one possible path along which energy moves » Food web ˃ Consists of many overlapping food chains » Energy Pyramid ˃ Shows the amount of energy that moves from one feeding level to the next. ˃ Most of the energy is available at the producer level and decreases as it moves up the pyramid