Deserts are formed due to less rainfall and high temperatures.Many deserts are found across the west side of the continents.The high pressure formed in the mid latitudes moves towards low pressure and carries moisture.
These total moisture carried by the trade winds across the East side of the continents and results in high rainfall.The trade winds leaves the east side of the continents and moves towards West side with empty moisture and results in less rainfall leads to formation of deserts.So,thick densely forests are located on the east side of the continents.
These total moisture carried by the trade winds across the East side of the continents and results in high rainfall.The trade winds leaves the east side of the continents and moves towards West side with empty moisture and results in less rainfall leads to formation of deserts.So,thick densely forests are located on the east side of the continents.