Have you ever wondered where your food comes from

If someone called you scum,you'd probably be offended,but scientifically,they might not be far off.Have you ever thought about where your food comes from?
You might say it comes from plants, animals, or even fungi.but you'd probably rather not think about the rotting organisms and poop that feed those plants, animals, and fungi.So really, you and most of the matter in your body are just two or three degrees of separation from things like pond scum.All species in an ecosystem,from the creatures in a coral reef to the fish in a lake to the lions on the savannah, are directly or indirectly nourished by dead stuff.