The general requirement for energy and materials is common in all organisms, but it is fulfilled in different ways.
Some organisms use simple food material obtained from inorganic sources in the form of carbon dioxide and water. These organisms, the Autotrophs include green plants🌱 and some bacteria.
Other organisms utilize complex substances and these complex substances have to be broken dow into simpler ones before they can be used for the upkeep an growth of the body.
To achieve this, organisms use Bio-catalyts called enzymes. Thus, the Heterotrophs survival depends directly or indirectly on Autotrophs. Heterotrophs include animals and fungi.