Living Things Interact

12 terms by leblue

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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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