The Earth's crust is the thinnest _____

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?

Consider the following statements related to the stratification of atmospheric layers.

$1$. All storms and cloudiness are restricted to the troposphere.

$2$. Cirrus clouds are formed on the top layers of the troposphere.

$3$. Ozone layer is found in Exosphere.

Which of the statements given above are correct?

Consider the following statements:

$1$. The difference between the moisture-holding capacity of air and its actual humidity is called saturation deficit.

$2$. The temperature to which air has to be cooled in order to reach saturation is called the dew point.

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