... the wind blows, and time and space seem endless.DD. A, B, and C are correct.3. What causes the growing of the world’s deserts?A. SandB. Nature.C. Nature and humans.C. Nature and humans.D. ... they are and how they are formed.A. It examines deserts, what they are and how they are formed.B. It examines plants and animals.B. It examines plants and animals.C. It examines sand in deserts.C. ... They cool the land under them and keep the sun off (2) …………………… When leaves fall from a tree, they make the land richer. When trees are gone, the small plants die and the land becomes desert....