1. What happens when it rains in deserts?

Ans. Rains are very rare in deserts. But whenever it rains, desert flowers start blooming.

  1. What is an oasis? How is it useful for desert plants?

Ans. An oasis is like a green island in the middle of a desert where a spring or a well gives plants and trees a better chance to grow.

  1. What are sand dunes?

Ans. A sand dune is a mountain, hill, etc of sand. It is formed when the wind blows the sand. The sand gets trapped and it forms a hill ,mountain etc.