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Definition
| water that has a lot of salt in it |
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| describes a species that is gone forever because all of its kind have died |
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Definition
| a name that identifies a specific kind of organism |
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Definition
| in danger of becoming extinct |
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Definition
| on the way to becoming endangered or extinct |
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Definition
| the living and nonliving things in an environment |
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Definition
| a group of the same kind of living thing that all live in one place at the same time |
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Definition
| all the populations of organisms that live in an ecosystem |
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Definition
| the place where a population lives in an ecosystem |
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Definition
| an area in which the main plants are trees |
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Definition
| an ecosystem where there is very little rain |
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Definition
| an ecosystem made up of large, flat areas of land that are covered with grass |
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Definition
| water that has very little salt in it |
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Definition
| one of the huge plains in the arctic regions of North America, Europe, and Asia. Trees do not grow on tundra. |
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