Question

why its is necesdary to have carnivores in a forest. ? explain

Answer 1

for the life cycle of animals

Answer 2

To maintain proper cycle.
If carnivores will not be there, herbivores will be more than enough. And will eat all the grains grass and plants. The no of herbivores will be so high that they'll be out of control. And if plants will not be there, we will not be there. Or there would be huge ecological disbalance..