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Setler79 [48]
2 years ago
11

What is the concept of DNA?

Biology
1 answer:
Anon25 [30]2 years ago
7 0
To find out if it's true or not
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A graph of coal reserves in the United States versus time slopes downward. This indicates that coal production could have ______
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The correct answer is:  [B]:  "decreased" .
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<u>Note</u>:
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        In a graph of "coal reserves in the United States" vs. "time" ; 

→ the "time" is the "independent variable" that belongs on the "x-axis" .

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

       If the graph "slopes downward" ;  this would indicate a "decrease" in the amount/quantity of "coal reserves" over "time" .  

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

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