Which of the following statements is/ are correct?1. Equatorial low—A belt of low pressure associated with the rising air in the ITCZ. (The rising of warm air heated at the Equator causes an area of low pressure called Equatorial low. As their rises, creates clouds and precipitation).2. Subtropical high—A belt of high pressure associated with the sinking air of the horse latitudes. (At the subtropics the air cools and descends creating areas of high pressure with clear skies and little precipitation, called the Subtropical High. The descending air is warm and dry and produces desert in these regions).3. Subpolar low—A belt of low pressure associated with the polar front.4. Polar high—A high pressure associated with the cold, dense air of the polar regions.

The standard pressure at sea-level is 1013.25 in both millibars (mb) and hectopascal (hPa).

The number of molecules in the atmosphere decreases with height.