Answer the following:

What may happen if all herbivores are killed in a terrestrial ecosystem?

Herbivores are the organisms that depend on producers (plants) to obtain food and are themselves a source of food to the carnivores. If all the herbivores of a terrestrial ecosystem get killed, all the life form on earth will die because there will be no food available for consumers. Also, the growth of producers (with zero consumption) will result in forests all over the earth. Since all the life forms on earth will die due to no availability of food (herbivores), the life on earth will come to an end.