Nutrition and Energy Flow

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Presentation transcript:

Nutrition and Energy Flow Food Webs/Food Chains

The Producers Autotrophs Plants – use the sun’s energy to create food (photosynthesis) Types – Grass, Trees, & Green Algae Importance-other organisms rely on autotrophs for nutrients and energy.

The Consumers Heterotrophs Can not make its own food/feeds on other organisms Types – Herbivore, Carnivore, Scavengers & Omnivores Decomposers break down dead and decaying plants and animals

Food Chain A model used to show how matter and energy move through an ecosystem. Nutrients & Energy move from autotrophs to heterotrophs and eventually to decomposers

Food Chain

Trophic Level Each organism

Food Web Shows all possible feeding relationships at each trophic level in a community More realistic than the food chain Most organisms depend on more than one species for food.

Food Web

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