1. Pollution caused by mining is the BIGGEST factor in which area?
a) Canadian Shield
b)Great Lakes
c) American border
d) Southern Canada

2. Which of these is the BIGGEST factor in the creation of acid rain?
a) mining
b) water pollution
c)deforestation
d) burning fuels

3. In 1972 and 2002, Canada and the U. S. agreed to take action regarding what kind of pollution?
a) acid rain
b) Canadian Shield pollution
c) deforestation
d) Great Lakes pollution

Pollutants released from processing plants, tailing ponds, underground mines, waste-disposal areas, active or abandoned surface or haulage roads, etc., act as the top sources of water pollution. Sediments released through soil erosion cause siltation or the smothering of stream beds.) Canadian Shield

Explanation:Sulfur dioxide (SO2) and nitrogen oxides (NOx) released into the air by fossil-fuel power plants, vehicles and oil refineries are the biggest cause of acid rain today, according to the EPA. Two thirds of sulfur dioxide and one fourth of nitrogen oxide found in the atmosphere come from electric power generators.

.d) burning fuels

b) Canadian Shield pollution