Major Domains of the Earth — Social Studies STD 6 — Question

1. The organisms found in the biosphere are broadly divided into plant kingdom and animal kingdom.
2. The four realms of the earth interact with one another and affect one another in some way or the other.

The growth of human population is a major cause of change in the biosphere. The growing population requires space for living. This leads to increase of silt in rivers that results ultimately into floods.

3. Floods provide new soil or alluvial (sand and earth).
4. But simultaneously floods destroy human habitation and cause complete disruption in smooth living of people.