Respuesta :

 there are very few plants in deserts to bind the soil together. Sand is easily blown by the wind. Xerophytes tend to have small, waxy leaves, which help the plant to retain water. Some, such as cacti, can store water in their trunks.

Answer:

Because of extremely dry and hot climatic conditions.

Explanation:

Deserts are characterized by presence of very hot and dry climatic conditions.  The plant species found in deserts have morphological and behavioral adaptations to withstand the unfavorable growth conditions. Since only a few plant species have adaptations to cope up with extremes of temperatures and water scarcity, few plants can survive in a desert.