Food Web - network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem, Food Chain  - A series of steps in which organisms transfer energy by eating and being eaten, Producer - An organism that can make its own food through the process of photosynthesis., Consumer - An organism that obtains energy by feeding on other organisms, Primary Consumer - An organism that eats producers, Secondary Consumer - An organism that eats primary consumers, Decomposers - An organism that breaks down wastes and dead organisms, Biotic  - living things, such as plants, animals, fungi, and bacteria, Abiotic - nonliving parts of an ecosystem, Grass  - Producer , Fungi (mushrooms) - Decomposer , Rabbit eats grass - Primary Consumer , Snake eats rabbit, rabbit eats grass - Secondary Consumer , Energy Pyramid - amount of energy available at each trophic level., Trophic level - Each step in a food chain or food web. ,

Food Chain, Food Web and Energy Pyramid.

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