Rocks — Geography STD 9 — Question

The compressional forces that cause folding of rocks and formation of fold mountains.

How many biogas plants have been set up in India under the National Biogas Development Programme?

Condensation

What are natural sources of air pollution?

The best example of chemically-formed sedimentary rock, which has been formed by the evaporation of water from solution containing minerals.

Describe the direction in which the following mountain systems lie and also point out the continents where they are found: Alpine Himalayan System

Global warming

Name one industry which pollutes the atmosphere with gaseous as well as with particulate matter.

State the longitudinal value in degrees of Indian Standard Meridian.

What is the latitude of Arctic Circle? Also, give its characteristics.