desert

1 - If the global desertification process continues at its current rate, the world will lose much of its arable land to barren desert.

2 - While most desert animals will drink water if confronted with it, for many of them the opportunity never comes.

3 - For desert rats and camels, the problem is conservation of water in an environment where standing water is nonexistent, temperature is high, and humidity is low.

4 - Desert plants differ considerably from one part of the world to another.

5 - Archaeologists uncover the remains of a Stone Age settlement in the Sahara desert.