1.

Nowadays many novel chemicals are being synthesized termed as xenobiotics. The unique feature of these is what they are I.biodegradablenII.non- biodegradablenIII.pose on environmental threatnIV.they are environment friendly

A. I, III
B. II, III
C. I, III, IV
D. II, III, IV
Answer» B. II, III


Discussion

No Comment Found