Give a geographical reason for each of the following:

Equatorial regions have low atmospheric pressure throughout the year.

Equatorial regions have low atmospheric pressure throughout the year because atmospheric pressure decreases with increase in temperature. This is because when the temperature rises, air expands. The molecules of air move far apart and hence exert less pressure. On the contrary, with decrease in temperature, the air gets compressed and the space between molecules decreases and exerts more pressure on the region.