The move to smaller,more fuel-efficient cars,begun in response to fuel shortages is continuing unabated and as a result,the concentrations of all atmospheric pollutants are declining.

Question

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While smaller, more fuel-efficient cars can reduce some pollutants related to fuel consumption, not all atmospheric pollutants are declining as a result. Other sources and types of pollutants, such as industrial emissions, continue to contribute to atmospheric pollution.

The Move to Smaller,more Fuel-Efficient Cars,begun in Response to Fuel