Which of the following groups are absolutely essential to the functioning of an ecosystem?

Question

A. Producers

B. Producers and herbivores

C. Producers, herbivores, and carnivores

D. Detrivores

E. Producers and detrivores

I think it's either A or E.

Maybe E.

Right?

Answer 1

E.

You need producers (to provide the food for the ecosystem), and you need detrivores to to break down organic material that the producers use as food.

Hope that helps!  :)

Answer 2

E:

Producers can feed directly to detritovores.  They can be the entire ecosystem.  When the producers die, they are consumed by detritovores and their organic material is broken down to useful forms for producers to use once again.