There are three main types of symbiotic relationships in nature:
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Mutualism: Both species benefit from the relationship. An example is the relationship between bees and flowers, where bees get nectar for food while helping in pollination.
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Commensalism: One species benefits from the relationship while the other is neither helped nor harmed. An example is barnacles attaching themselves to whales for transportation without harming the whales.
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Parasitism: One species benefits while the other is harmed. An example is ticks feeding on the blood of animals, causing harm to the host.