What is an ecosystem and how to do organisms interact?

An ecosystem is an entire area that can sustain life. Ecosystems come in many sizes. If you take a look around you, you will see how we are a part of an ecosystem and we interact with other living organisms to maintain our lives. We eat animals, and we raise animals and feed them also. You can have a complete ecosystem on an acre of land and be self sufficient. But you will be interacting with all sorts of living creatures that make your life possible, from microscopic life to the big fat cow you are going to butcher for dinner this month.