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Decomposition is a crucial part of any ecosystem. You need to eat food and also vitamins and minerals to survive. That means that a certain percentage of the available salt, nitrogen, calcium, etc are tied up in your body. The same is true for all other creatures. When an animal (or plant) dies, the cells start to break down and are available for fungi and bacteria to decompose. After they have finished, all of the useful materials the animal was made from will be available to other living things. So, a bird might pass away, be decomposed and then help fertilize grasses that feed a deer. If nothing decomposed the world would be littered with bodies; bodies that held a lot of useful elements. Plants, animals and fungi that depend on "stealing" elements from dead bodies would be unable to survive. Decomposition is biological recycling, like compost.

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16y ago

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