Groundwater supplies can be easily contaminated by surface mining of coal. identify how surface mining might adversely affect groundwater conditions.

a) increased runoff of poor quality water to nearby streams

b) recharge of poor quality water to shallow groundwater aquifers

c) technologies used to control water flow prevents contamination

d) increased runoff of poor quality water to nearby streams and recharge of poor quality water to shallow groundwater aquifers

hint: think about the term watershed