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Travka [436]
3 years ago
6

Dr. Charles is using _____ when she uses a powerful field to track changes in the brain's blood-oxygen levels.

Biology
1 answer:
ZanzabumX [31]3 years ago
3 0
I think it might be Oximeter
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The annual precipitation varies most in which of these ecosystem?
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The annual precipitation varies most in tropical rain forest ecosystem.

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