In the biosphere there are two types of organisms, there are autotrophs which are organisms that makes their own food
and heterotrophs which are organisms that eats other organisms to obtain energy.
Most autotrophs use energy from the sun and organic compounds to make energy through the process called photosynthesis.Without
autotrophs life is impossible on earth.
This is so because all energy is passed through autrotrophs.Energy starts at the sun and is absorbed by autotrophs.
Then heterotrophs come along and eat autotrophs such as plants and they absorb all the energy from the autotroph. Then
when the heterotroph dies it becomes of a part of soil and its energy is passed right back to autotrophs and the process starts
again. A perfect example of this is the food chain.
