If there were no Himalayan ranges, what would have been the most likely geographical impact on India?

1. Most of the country would experience the cold waves from Siberia.

2. Indo-Gangetic plain would be devoid of such extensive alluvial soils.

3. The pattern of monsoon would be different from what it is at present.

Which of the statements given above is/are correct?

I.A.S. (Pre) 2010