What is the central idea in "Excerpt from What Zoo Critics Don't Understand"

The central idea is that few out of every odd zoo must be awful for a creature, numerous zoos on the planet spare the species while in the "wild" individuals murder them.

Refer below for the explanation.

Explanation:

The other thing about the "Selection From What Zoo Critics Don't Understand" is that creatures ought to have a place with the wild, not to the restricted spaces. As the planet is being decimated by people, the main wild places on the Erth are Antarctic and Amazonia, and possibly a few pieces of Africa.

The possibility of the passage is to show how creatures likewise go up against numerous issues, for example, poacher and hunger, and that the fundamental purpose behind this is the man.