| Question |
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| Answer |
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| autotrophs |
organisms that make their own food; another name for producers |
| heterotrophs |
organisms that cannot make their own food; another name for consumers |
| homeostasis |
the process by which an organism’s internal environment is kept stable in spite of changes in the external environment |
| ecosystem |
all of the living and nonliving things that interact in an area |
| habitat |
the place where an organism lives and that provides the things the organism needs |
| biotic |
living part of an ecosystem |
| abiotic |
nonliving part of an ecosystem |
| community |
all of the different populations that live together in an area |
| population |
all of the members of one species in a particular area |
| ecology |
the study of how living things interact with each other and their environment |
| limiting factor |
an environmental factor that prevents a population from increasing |
| carrying capacity |
the largest population that an area can support |