explain how energy enters, flows through, and exits an ecosystem.
Grasslands of BC :: Ecosystems. Energy Flow. Refer to the yellow arrows in the diagram to help you understand the way that energy moves through an ecosystem. Energy enters an ecosystem in the form of heat from the sun. This energy is absorbed by organisms such as plants, and is then converted to other forms of energy and stored. Once stored, energy is used for necessary life functions, such as growth, movement and reproduction.
Summary: 1  Energy is not recycled. 2  Energy is lost from the ecosystem in the form of heat through cell respiration. 3  Nutrients must be recycled as there is only a limited supply of them.  They are absorbed by the environment, used by organisms and then returned to the environment.