Consider the following statements about the Himalayas.

1. The altitudinal variations are greater in the eastern half than those in the western half.

2. The core of Eastern Himalayas is made up of Sandstone, but that of Western Himalayas is made up of Basalt and Granite.

Which of the above is/are correct?

Within the Earth's ocean and atmosphere, Rossby waves form as a result of

It is the western boundary current of the southwest Indian Ocean. It acts as an oceanic convergence zone. This ocean current is

Moderate and Milder climate in the Southern Hemisphere as compared to the Northern hemisphere, for the same latitude, can be explained by

1. Continentality

2. Photoperiodism

Which of the above is/are correct?

At equatorial regions temperature is usually observed to be moderate despite the high solar insolation. This can be due to