Journalist: Obviously, though some animals are purely carnivorous, none would survive without plants  But the dependence is mutual  Many plant species would never have come to be had there been no animals to pollinate, fertilize, and broadcast their seeds
Also, plants' photosynthetic activity would deplete the carbon dioxide in Earth' s atmosphere were it not constantly being replenished by the exhalation of animals, engine fumes, and smoke from fires, many set by human beings
Some purely carnivorous animals would not survive without plants.