Desertification is becoming a problem in China, especially northwestern China. Which statement about the local population in northwestern China is MOST likely true?
-The local population may not have enough food to sustain its numbers.
-Members of the local population are moving eastward to more arable land.
-The local population's practices did little to contribute to the expanding desert.

ANSWER CHOICES:
I only
II only
III only
I and II
I and III