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Definition
| An object or condition required for survival |
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Definition
| A supply of something useful for survival |
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Definition
| A relationship in which two or more organisms struggle for the same resource |
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Definition
| A close relationship in which two or more organisms from different species live together |
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Definition
| An organism that has a parasite living in or on it |
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Definition
| The role of an organism in a habitat |
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Definition
| A system of several overlapping food chains |
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Definition
| The coloring or patterns that allow a species to blend in with its habitat |
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Definition
| The resemblance of one species to another |
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Definition
| A behavior that protects a species from harm |
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Definition
| The state in which all influences cancel one another out, resulting in no overall change |
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Definition
| The movement of energy within an ecosystem |
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Definition
| A substance that all living things need in order to survive |
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Definition
| A process in which nutrients and other resources are repeatedly transferred throughout an ecosystem |
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Definition
| A species in its natural habitat |
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Definition
| A species that is not native to a habitat |
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Definition
| The illegal killing or removal of organisms from their ecosystems |
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Definition
| The introduction of poisons or garbage into an ecosystem |
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Definition
| The removal of most or all trees from a forest |
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Term
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Definition
| The protection and restoration of species and natural resources in an ecosystem |
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Term
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Definition
| A method of increasing the population of an endangered species through human intervention |
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