D2E1S1E1R1T1I1F4Y4
16 points
DESERTIFY is validvalid
[v DESERTIFIED, DESERTIFIES, DESERTIFYING] : DESERTIFICATION [n]
to make into a desert [v DESERTIFIED, DESERTIFYING, DESERTIFIES]
[v DESERTIFIED, DESERTIFIES, DESERTIFYING] : DESERTIFICATION [n]
to make into a desert [v DESERTIFIED, DESERTIFYING, DESERTIFIES]