What is cellular respiration and why is it needed

Cellular respiration is a process that traits place in the mitochondrion of a cell. it is a cells way of producing energy. it is needed because without it your body wouldn't be able to perform any actions that needed energy, eventually leading to death.

A food web describes the flow of energy and nutrients through an ecosystem, ... Organisms can be organized into trophic levels: primary producer, primary ... In both food webs and food chains, arrows point from an organism that is consumed to ... of trophic energy transfers, the amount of energyremaining in the food chain ...