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Animals are constantly interacting in nature.
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Symbiosis refers to a prolonged relationship between two species.
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So let's take the example to the left of a clownfish and an anemone.
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In this relationship, the anemone provides a clownfish a safe home, free from predators.
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In return, the anemone is provided with food and is also cleaned by the clownfish.
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This relationship benefits both species and is known as mutualism.
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Now, on top is a tick on a human leg.
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Now, in this relationship, the tick latches on and sucks the human's blood.
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This benefits a tick, but not the human...