(1) Tropical Evergreen Rain Forests,
(2) Deciduous or Monsoon Type of Forests,
(3) Dry Deciduous Forests and Scrubs,
Semi Desert and Desert Vegetation
In Northern America, the desert extends from Mexico into the USA. These deserts are called by different names. For example, It is called Mohave in the Sonoran, Californian, and Mexican deserts.
Annual Precipitation in Yuma, Arizona, in the United States receives 3.3 inches of rainfall in a year. The aridity of deserts is a significant feature of the desert climate.
These hot deserts lie on the back of the Horse Latitudes or the Sub-Tropical High-Pressure Belts. Here the air is descending, which is unfavorable for any precipitation.
The rain-bearing trade Winds blow offshore and the westerlies which are onshore blow outside desert limits.
The winds that reach the deserts blow from cooler to warmer regions lose their relative humidity, which makes condensation almost impossible. Also here there clear blue sky and scarcely any clouds.
In this region, the relative humidity is less than 30% and in these, every bit of moisture is evaporated and these regions do experience permanent drought.
(5) Tidal or Mangrove Forests and (6) Mountain Forests.