संदेश
What are the earths principal biological system?
Let's crack it
Here you will get answer of each and every question asked by CBSE in examination.
What are the earths principal biological system?
There are four principal biological system of the earth they are fisheries forest Grassland and crop plants they form the foundation of the Global economic system they supply us food they all provide all the raw material for industry except mineral human demand on these system are increasing to a point where their productivity is impaired.
Q1). What is the full name of this chapter?
Comment your answer.
I will give heart to all of them who will comment the answer.