Question

in desert a small hills of sand is known as----------​

Answer 1

$\large\mathcal\red{Dunes}$

$\rightarrow$Small hills of sands found in the desert areas are called dunes or sand dunes. 

$\rightarrow$Sand dunes are not permanent hills. 

$\rightarrow$Sand move in the wind and accumulate at one place forming a structure of hill which is called the dunes.

Answer 2

Answer:

In desert a small hills of sand is known as dunes.