How can resources be classified on the basis of their origin?

Which one of the following is an exhaustible but renewable natural resource?

Suggest the type of resources we should use more, in order to save our environment.

What do we call balancing the need to use resources and also conserve them for the future?

In the context of which one of the following are the terms ‘pyrolysis and plasma gasification’ mentioned?

Conservation of soil is the process in which –