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7.MS-LS2-3
| Term | Definition |
|---|---|
| photosynthesis | the process by which producers (plants, algae, and some bacteria) use sunlight, carbon dioxide, and water to make food |
| chloroplast | the organelle in a producer's cell where photosynthesis takes place |
| cellular respiration | the process by which cells use oxygen to produce energy from food |
| mitochondrion | the organelle where cellular respiration takes place |
| water cycle | the movement of water through the environment |
| carbon cycle | the exchange of carbon between the environment and living things |
| carbon | an element found in the most common molecules in living things |
| herbivore | A consumer that eats only plants |
| autotroph | An organism that makes its own food (a producer) |
| biomass pyramid | represents the amount of living organic matter at each trophic level |
| apex predator | The top predator in an ecosystem, an animal which is a predator with no natural predators of its own, it is on the top of one or more food chain/s with nothing above |
| trophic levels | The hierarchical levels of the food chain through which energy flows from primary producers to primary consumers, secondary consumers and so on. |
| producer | An organism that can make its own food. |
| energy pyramid | A diagram that shows the amount of energy that moves from one trophic level to another in a food web |
| food web | a diagram that shows the feeding relationships between organisms in an ecosystem (inter-locking food chains) |
| decomposer | An organism that gets energy by breaking down wastes and dead organisms, and returns raw materials to the soil and water. |
| omnivore | organism that obtains energy by eating both plants and animals |
| bioaccumulation | the build up of a substance (usually a toxin) as it passes through a food chain |
| primary consumers | the first consumers on a food chain; herbivores |
| energy transfer | Movement of energy from one place or object to another |
| carnivore | organism that obtains energy by eating animals |
| ecological recycling | The movement and exchange of living and non-living matter back into the production of living matter |
| scavenger | A carnivore that feeds on the bodies of dead organisms |
| heterotroph | An organism that cannot make its own food. |
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shaveet
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