Which is a natural change?

Which bridge is a supported structure?

Soil erosion can be reduced by:

The changes in nature are of:

An open place or a  covered building where buyers  and  sellers convene for the  sale of goods is called a:

When all the trees in a large area are cut down, it is called:

The whole length and breadth of the country is connected with a net work of:

Artificial waterway constructed for navigation or for the movement of water is called:

The component of nature is:

When the soil is  blown away by the wind or washed away by the rain, it is called: