eli5: Why is fecal matter so nutritious for plants if it’s considered “body waste”?

Question

Since poop is the solid waste that the majority of organisms produce, how is it so packed with nutrients that plants like?

In: Biology

Answer 1

Plants “eat” air and light. That’s not everything they need, so they use their roots to gather the last little bits from rocks. Animals eat plants or animals that ate plants. Animal poop is predigestested rocks for plants.