Longitudinal sand dunes move slowly at the rate of ________ per annum:

Deserts plants have longer root system because:

The Forest Act of 1927 needs to be reversed again to bring it in consonance with the modern day requirements of protecting preserving and expanding the country’s meager forest resources and the attended benefits such as:

General Volume Tables is / are:

Logging means:

In a forest ecosystem, the numerical relationship between the producers and herbivores: