SOME CHEMICAL________WHICH FARMERS USE TO MAKE THE SOIL RICHER CAN...
83.
Some chemical________which farmers use to make the soil richer can pollute our environment.
A. medicines
B. elements
C. fertilizers
D. proportion
83.
Some chemical________which farmers use to make the soil richer can pollute our environment.
A. medicines
B. elements
C. fertilizers
D. proportion