Answer
Ecosystem
Step-by-step explanation
An ecosystem is a community made up of living organisms like plants and animals and nonliving components such as air, water, and mineral soil in a given area interacting with each other. There are different types of ecosystem like forest ecosystems where classification is according to their climate. Desert ecosystem,marine ecosystems and grass ecosystems among others. The producers, the consumers, and the decomposers are the three levels of the organisms that helps in the regulation of energy in the ecosystems.