What do you need if you walk in a desert? - If you....
If you walk in a desert, you need bottles of water.
What do you see if you stand at the top of a cliff? - If you....
If you stand at the top of a cliff, you can see the ocean, the sea or the coast.
What do you see if you visit a jungle? - If you...
If you visit a jungle, you see trees and animals.