Its excessive use pollutes environment because it is made of animal excretory waste.
A. (i) and (iii)
B. (i) and (ii)
C. (ii) and (iii)
D. (iii) and (iv)
Answer:B
Its excessive use pollutes environment because it is made of animal excretory waste.
A. (i) and (iii) B. (i) and (ii) C. (ii) and (iii) D. (iii) and (iv)