Quais as três principais formas de formação dos desertos?

- prolonged exposure to high pressure zones

- mountain ranges

- cold oceanic currents

Explanation:

All deserts form because of prolonged period of lack of precipitation. That happens because of multiple reasons, with some of them being high pressure zones, mountain ranges, and cold oceanic currents. The high pressure zones are basically consisted of denser, lower air masses which do not allow the low pressure air masses to come in, thus stopping the rainfall. The mountain ranges are a natural barrier, and they manage to stop the wet air masses, so there's lot of rainfall on the windward side, but the leeward side will be very dry. The cold oceanic currents bring in colder and dry weather, with the air masses also being very dense, and while they manage to produce some moisture close to the ground, the rainfall is extremely rare.