How does importing coal contribute to pollution?
a. if the u. s. did not import coal, it would have to use alternative fuel methods.
b. fuel is used to transport the coal, which contributes to pollution.
c. shipping coal overseas causes water pollution from coal spills.
d. all of the above

The appropriate response is letter B. The bringing in coal add to contamination is that fuel is utilized to transport the coal, which adds to contamination. The United States is a net exporter of coal. Be that as it may, some coal is as yet foreign, for the most part for power plants on the eastern and southern shores of the nation, where it is less expensive to send in coal via ocean from South America than transport it from mines in the northern and western United States

the way that coal contribute to pollution is: b. Fuel is used to transport the coal, which contributes to pollution. Option A is wrong because we import large amount of coal to fuel our factory's machinary and option C is wrong because coal is in solid form when it being transported which make it very unlikely to get spilled out.