1.
Human learns to grow crops, domesticate animals and lead a settled life.
2.
Hydrosphere comprises various sources of water and different types of water bodies like rivers, lakes, seas, oceans, etc.
3.
Option A
4.
Natural
5.
Option A
6.
All plants, animals and human beings depend on immediate surroundings.
7.
Early humans adapted themselves to the natural surroundings.
8.
Plant and animal kingdom together make biosphere or the living world.
9.
Environment
10.
Option B
11.
Option A
12.
The lithosphere is an irregular surface with various landforms such as mountains, plateaus, plains, valleys, etc.
13.
Option A
14.
Option C
15.
Option A
16.
Ecosystem
17.
Often land, water and air are interdependent on each other.
18.
Natural
19.
The lithosphere is made up of rocks and minerals and covered by a thin layer of soil.
20.
Mineral
