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What are the most common types of symbiotic relationships?
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The most common types of symbiotic relationships include mutualism, commensalism, parasitism, and amensalism. Mutualism is a relationship in which both parties benefit from each other's presence; for example, when one species provides food or shelter to another. Commensalism is a relationship in which one species benefits while the other is unaffected, such as when one species feeds on waste products produced by the other. Parasitism is a relationship in which one species benefits at the expense of the other, such as when one species lives off the other's body. Amensalism is a relationship in which one species is unaffected by the presence of the other, such as when two species live in different habitats but have no interaction with each other.