Answer:
Animals are totally dependent on plants. First of all plants produce oxygen which is vital for life on earth. Then, for many animals plants are their basic food, or if plants don’t make up 100 % of their diet, plants are nevertheless essential in their food supply. Plants are also used by animals (and men) as material for building nests (and or homes). Carnivorous animals eat animals which are herbivorous, and without plants they wouldn’t survive, so the carnivors would quickly disappear. Plants are also vital in the maintaining of the climate and without plants the earth’s surface would be subject to erosion. So, to resume, life on earth wouldn’t be possible without plants.