Consider the following statements:

$1.$ Jet streams are responsible for Western disturbances in India.

$2$. Polar front jet is related to Rossby waves.

$3.$ Rossby waves are better observed in the Northern hemisphere than in the Southern hemisphere.

Which of the statement(s) given above is/are correct?

Consider the following crops of India:

$1$. Cowpea

$2$. Green gram

$3$. Pigeon pea

Which of the above is/are used as pulse, fodder and green manure?

Consider the following statements:

$1$. International Date Line is drawn zigzag to avoid landmass.

$2$. International Date Line is $180° \mathrm{W}$ as well as $180° \mathrm{E}$ of Greenwich.

$3$. A ship sailing westward from Greenwich when crossing International Date Line would put forth the date by a day.

Which of the statement(s) given above is/are correct?

The below diagram is of a mushroom rock. In which of the points in the diagram is the intensity of wind strongest?