Question

what are the main biological systems of the earth?? thanks carbinegamerz for giving me thanks​

Answer 1

There are four principal biological systems of the earth. These systems are fisheries, forests, grasslands and croplands. In addition to supplying our food, these four systems provide virtually all the raw material for the industry.

Answer 2

Explanation:

There are four principal biological systems of the earth. These systems are fisheries, forests, grasslands and croplands. In addition to supplying our food, these four systems provide virtually all the raw material for the industry.