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dem82 [27]
3 years ago
15

Why was 1990 an important year regarding air quality?

Computers and Technology
2 answers:
qaws [65]3 years ago
7 0

Answer:

It's C

Explanation:

fredd [130]3 years ago
4 0

Explanation:

The United States created the Environmental Protection Agency. in some ways they have did that

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Explanation: brainliest plz!

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Which type of cell references are locked and NOT automatically updated when it’s copied
dsp73

Hi I would have to say B sorry if this answer is sucky but I'm trying my best to help you :D

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Round 74,361 to the nearest 10​
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I think it is D because you would need there contact information in case something happens not there trade name

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