How many types of soils are there in Tamil Nadu?

What is the total amount of energy is produced by wind?

Which type of soil is found in Coimbatore?

How many years does it take to make one centimeter or soil?

Which among the following are examples of biotic resources?

Which among the following are obtained from biosphere?

Which among the following is not a bio fuel plant?

In which district Mettur Thermal Power station is situated?

What refers to the natural wealth available on earth surface for mankind?

Which resources are reproduces without getting depleted?