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Matter and Energy
Module Vocabulary List 1
| Term | Definition |
|---|---|
| photosynthesis | a series of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule glucose and give off oxygen. |
| ecosystem | all the living things and nonliving things in a given area. |
| cellular respiration | a series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP. |
| glycolysis | a process by which glucose, a sugar, is broken down into smaller molecules. |
| producer | an organism that uses an outside energy source, such as the Sun, and produces its own food. |
| consumer | an organism that cannot make its own food and gets energy by eating other organisms. |
| detritivore | an organism that consumes the bodies of dead organisms and wastes produced by living organisms. |
| food chain | a model that shows how energy flows in an ecosystem through feeding relationships. |
| food web | a model of energy transfer that can show how the food chains in a community are interconnected. |
| energy pyramid | a model that shows the amount of energy available in each link of a food chain. |
| evaporation | the process of a liquid changing to a gas at the surface of the liquid. |
| condensation | the process by which a gas changes to a liquid. |
| precipitation | water, in liquid or solid form, that falls from the atmosphere. |
| nitrogen fixation | the process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things. |
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