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Airida [17]
3 years ago
9

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

Chemistry
2 answers:
weeeeeb [17]3 years ago
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]3 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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I would say the answer is A.

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3 years ago
What's the easiest way to find balance in a chemical equation?
ivann1987 [24]
Well not calculus because that has nothing, well mostly nothing to do with balancing chemical equation, so B or C. Now for me personally B is way faster, though C is sometimes faster if you get lucky the way to solve it is B
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Which of the following can undergo metamorphosis?
Vaselesa [24]

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Who is allowed to go into a crime scene after its released?
Gala2k [10]

Answer:

detectives, police officers and occasionaly lawyers/attorneys.

Explanation:

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6 0
3 years ago
PLEASE HELP!!
igomit [66]
Answer is: the specific heat capacity of the metal is <span>A) 0.129 J/gK.
</span>m(metal) = 15,1 g.
Q = 48,75 J.
ΔT = 25 K.
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C = Q ÷ ΔT · m(metal).
C = 48,75 J ÷ 25 K · 15,1 g.
C = 0,129 J/g·K.
3 0
3 years ago
Read 2 more answers
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