Living Things Interact
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12 terms
Terms | Definitions |
|---|---|
symbiosis | a close, long-term relationship between two or more species |
predator | an organism that consumes another. |
prey | an organism that is eaten by another. |
mutualism | a relationship where both organisms benefit from each other. |
commensalism | a relationship where one organism benefits and the other is not helped or hurt. |
parasitism | a symbiotic relationship where one organism benefits and the other is harmed. |
parasite | an organism that feeds off of another living creature, usually without killing it |
host | the organism that is harmed in a parasitic relationship |
competition | when two or more organisms fight for the same limited resource (food or space.) |
Commensalism | A bird builds its nest in a tree where it is safe from predators. The tree is unaffected by the birds. |
Parasitism | A tapeworm lives inside the digestive tract of a dog. The dog begins to lose weight over time because the tapeworm is taking away its nutrients. |
Mutualism | Stinging ants live in a tree with thorns for protection. In turn, the ants protect the tree from being eaten by other animals. |
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