As soon as you put more than one species in an ecosystem, you have species interactions. There are many kinds of these relationships, each defined by what each side gets out of the deal. Many of these you've heard of, though you might not have strict definitions for, like Competition or the Antagonism of predator and prey. One of the most fascinating relationships animals can have, though, is what is called Mutualism, where both sides benefit from the interaction.
Mutualism is very common: the classic example is the relationship pollinators and their plants. Around 70% of land plants require…
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