Soil contains tiny grains of rock and minerals and it becomes fertile when humus is mixed in it. In soil, air spaces are also found. Soil may also contain many organisms. They also help to make the soil fertile and loose. Soil may be of differentanbsp;...
|Title||:||Interactive School Science 8|
|Author||:||D. R. Sharma|
|Publisher||:||D. R. Sharma -|