Autotrophs and Heterotrophs benefit each other by providing raw materials for various life processes ,directly or indirectly .
Explanation:
Autotrophs can prepare their own food by using sunlight .This is not possible for Heterotrophs. Heterotrophs obtain their food from Autotrophs.
Heterotrophs Feed on Plants and helps them in Pollination and Seed dispersal.
Autotrophs Carry out photosynthesis and produce oxygen which is taken up by heterotrophs for respiration. Heterotrophs in turn, give out Carbon dioxide which is used up by autotrophs.
Heterotrophs like detrivores and decomposers obtain there food from decaying plant parts and thus break down the nutrient which is then made available to plants.
The greater the surface-area to volume ratio of a cell, the easier it is for the cell to get rid of wastes and take in essential materials such as oxygen and nutrients.