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valentina_108 [34]

3 years ago

10

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?

2 answers:

iogann1982 [59]3 years ago

5 0

Answer: 21 holes

Explanation:

Yes

kykrilka [37]3 years ago

3 0

The oxygen levels I think

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