【单选题】Peat is organic matter which develops in wetland areas. It is the ideal growing medium for plants, and there is a tremendous demand for it from gardeners, both amateur and professional. But only three...
A.
Only three percent of the land on our planet is covered in peatland.
B.
Taking too much peat will destroy the unique wetland areas in which it develops.
C.
Peat cannot develop except in wetland areas.
D.
No more peat should be extracted and a different growing medium for plants should be promoted.
E.
Peat is a very popular growing medium used by amateur gardeners and professional growers.