What roles do they play to the food chain?

Answers (2)

I really forgot

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I think you should complete or emphasize what you really want to say but anyways food chains and webs ensure that one particular species cannot become too large and therefore destroy the species it feeds on, creating a massive inbalance. This means that every creature has a predator and/or environmental threats so their population cannot increase to an amount that is unhealthy for the surounding ecosystem.

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