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Aliun [14]
3 years ago
9

A graph of coal reserves in the United States versus time slopes downward.

Chemistry
2 answers:
Dafna1 [17]3 years ago
4 0

Answer:

increased

Explanation:

I believe to be increased ,because the coal is a natural resource to be used.

i really hope it helps

tatyana61 [14]3 years ago
3 0
I remember I had this question before on USA test prep and it’s increased
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