2 years ago

What has caused air quality in United States to improve/get better since the 1950s?

2 answers:

8 0

Answer:

better mileage on cars, took lead out of paint, smaller packaging like for delivery and store products, EPA laws updating

stealth61 [152]2 years ago

8 0

Answer:

Reducing pollution from transportation sources has led to healthier air for Americans. In cities, smog has been visibly reduced.

Explanation:

i hope this helped

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What has caused air quality in United States to improve/get better since the 1950s?￼

What has caused air quality in United States to improve/get better since the 1950s?