How has agriculture contributed to the decline of the Chang Jiang's (Yangtze River) water quality? (AKS 51a) (DOK 2)
O
A. Clearing land for farming has caused acid rain.
O
B. The fertilizers used by farmers contaminated the river.
O
C. Livestock drink from the river and spread their diseases.
O
D. Irrigation of farmland has reduced the water level in the river.

Pl halp me:)