Desertification，the name for ______ happens when farmable land is turned into desert，is a growing world problem.

A. which          B. where              C. what               D. How

Desertification，the name for ______ happens when farmable land is turned into desert，is a growing world problem.

1. A.
   which
2. B.
   where
3. C.
   what
4. D.
   How