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| Question | Answer |
|---|---|
| Autotroph | an organism that produces its own food using sunlight, water, and carbon dioxide (photosynthesis) or chemical energy |
| Heterotroph | an organism that cannot produce its own food, so it must consume other organisms—such as plants, animals, or bacteria—for energy |
| Organism | any individual living thing, ranging from bacteria to plants, animals, and fungi |
| Habitat | he natural home or environment where an organism (plant, animal, or other living thing) lives, providing essential resources for survival: food, water, shelter, and space |
| Biotic factor | all the living components of an ecosystem that affect other organisms and the environment |
| Abiotic factor | the non-living physical and chemical parts of an environment that affect living organisms and ecosystem functioning. |
| Species | a group of organisms that can interbreed in nature to produce fertile offspring |
| Population | a group of individuals of the same species living in the same geographic area at the same time that have the ability to interbreed |
| Community | a group of different populations of living organisms (plants, animals, microbes) that share a common habitat and interact with one another |
| Ecosystem | a community of living things (plants, animals, microbes) interacting with their non-living environment (sunlight, soil, water, air) in a specific area. |