List the key functional aspects of ecosystems

A knowledge of the rates at which differenct processes occur in ecosystem is necessary to understand the interrelations of ecosystem is necessary structure and function. The key functional aspects of the ecosystem are all of the following, except :

Choose the odd one out with respect to the functional aspects of ecosystem.

Select the odd one with respect to the functional aspect of the ecosystem.

How many most important functional aspects of ecosystem are there ? Whiche one is associated with rate of biomass production ?

Choose odd one out w.r.t. functional aspects of ecosystem.

Which of the following is a functional aspect of ecosystem?

Which of the following is a functional aspect of an ecosystem?

Which is not a structural aspect of ecosystem?