单项选择题
Whensomethingdiesinnature,_________.
A.waterandgrassarepolluted
B.plasticandwoodbecomefood
C.otheranimalsandplantsgetfood
D.metalandglassstayintheground
A.
A.waterandgrassarepolluted
B.plasticandwoodbecomefood
C.otheranimalsandplantsgetfood
D.metalandglassstayintheground