Question

What do you know about the earth's biological system and their functions?

Answer 1

Answer:

There are basically four types of biological systems in earth. They are fisheries, forests, grasslands and crop lands.

Fisheries are important for aquatic ecosystems.

Forests are important for the ecological balance and provide habitat for the wild life.

Grasslands are important for ecological conditions.

Croplands are important as they support food for humans.

But nowadays grasslands are turned to desert and croplands percentages are decreasing.