Are wasps and cockroaches indispensable ??

Question

What species depend on them to survive?

Answer 1

They are indispensable when their population does not reach to a level where it can be harmful for both environment and humans.

Both are part of our ecosystem. They are eaten by a variety of animals including other insects,birds, mammals, fishes etc.

Some wasps do the job of population control of spiders.

Cockroaches are scavengers and they eat all type of things thereby keeping the environment clean.