Must all ecosystems have quaternary consumers? why or why not?

Quaternary consumers eat the tertiary consumers and are carnivores. These consumers are typically carnivorous animals. In my opinion, all ecosystems necessarily should have a quaternary consumers. This is because they complete the food chain. In every, ecosystem you can see these consumers.

Cuz i said so. which gives it to b

There are no negative consequences to using nuclear energy.  false. how is the   the hydrogen bomb relies on the process of nuclear fission. true.