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7.12A,B Vocab
7.12A,B Science Vocab
| Term | Definition |
|---|---|
| consumer | an organism that eats other organisms or organic matter |
| energy pyramid | a triangular diagram that shows an ecosystem's loss of energy, which results as energy passes through the ecosystem's food chain. |
| food chain | the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms |
| food web | a diagram that shows the feeding relationships between organisms in an ecosystem |
| producer | an organism that can make its own food by using energy from its surroundings |
| trophic level | one of the steps in a food chain or food pyramid; examples include producers and primary, secondary, and tertiary consumers |
| primary | first |
| secondary | second |
| tertiary | third |
| biosphere | the part of Earth where life exists; includes all of the living organisms on Earth |
| cellular respiration | the process by which cells use oxygen to produce energy from food |
| decomposer | an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients |
| nutrient | a substance in food that provides energy or helps form body tissues and that is necessary for life and growth |
| photosynthesis | the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to make food |
| abiotic factor | an environmental factor that is not associated with the activities of living organisms |
| biotic factor | an environmental factor that is associated with or results from the activities of living organisms |
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