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Students are testing the james river for dissolved-oxygen levels. They test in the blue ridge mountains,at the rivers source,and in Richmond Virginia,a highly populated area. Wh…

Students are testing the james river for dissolved-oxygen levels. They test in the blue ridge mountains,at the rivers source,and in Richmond Virginia,a highly populated area. Wh…
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Students are testing the james river for dissolved-oxygen levels. They test in the blue ridge mountains,at the rivers source,and in Richmond Virginia,a highly populated area. What is the independent variable in this experiment?

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User Adiant
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2 Answers

0 votes
The oxygen levels I think
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User Nikhil Mehta
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4 votes

Answer: 21 holes

Step-by-step explanation:

Yes

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User Ulrichb
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