Question

how are even small animals important in an ecosystem

Answer 1

The food chain is the main part of the ecosystem and the small animals play a vital role in this food chain. The whole ecosystem gets shattered if there are no small animals. The larger animals consume the small animals and therefore the food chain structure a pyramid eco-system.

Answer 2

the small animal it up the plant leaves. the waste product they excrete are good for the fertility of soil. this increases the growth of plants and also the food for other animals