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Nookie1986 [14]
2 years ago
8

1. A molecule that contains only carbon and hydrogen is called a

Biology
1 answer:
NemiM [27]2 years ago
6 0

Answer:

hydrocarbon

Explanation:

It's called a hydrocarbon

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→ The quantity or amount of "coal reserves in the United States" is the "dependent variable" that belongs on the "y-axis" . 

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→  As the value of "x" increases — "time" increases — and; as "x" increases, the value of "y" {the amount/quantity of "coal reserves"} decreases.  

→ This would be represented by a "downward sloping" graph;  

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