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ch.18.3
vocabulary 18.3
| Question | Answer |
|---|---|
| producer | autotraphs capture energy and use it to make organic molecules |
| chemosynthesis | the use of energy in stored inorgantic molecule to produce carbs |
| gross primary Productivity | the rate at which producers in an ecosystem capture the energy or sunlight by producing organic compounds |
| biomass | organic material produced in an ecosystem |
| net primary productivity | the rate that biomass accumulates |
| consumer | obtain energy by consuming organic molecules produced by other organisms |
| Herbivores | eat producers |
| Carnivores | eat other consumers |
| Omnivores | eat both |
| Detritvores | they feed on the garbage of the ecosystem |
| decomposers | Cause decay by breaking down complex molecules into simpler ones |
| trophic level | organisms position in sytem of energy transfer |
| food chain | a pathway of feeding relationships among animals |
| food web | interrelated food chains in an ecosystem |