Bonus points and brainlist
Pollution caused by mining is the biggest factor in the creation of acid rain

canadian shield

Great Lakes

American border

Southern canada

Which of these is the biggest factor in the creation of acid rain

mining

water pollution

deforestation

burning fuels

In 1972 and 2002,Canada and the U.S. agreed to take action regarding

what kind of pollution

acid rain

Canadian Shield pollution

deforestation

Great Lakes pollution