Scientists have concluded that deep Pacific Ocean water is old is due to its low:
A) density.
B) nutrient levels.
C) oxygen levels.
D) salinity.
E) temperature.

Name: Scientists have concluded that deep Pacific Ocean water is old is due to its low: A) density. B) nutrient levels. C) oxygen levels. D) salinity. E) temperature.
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Question

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Deep Pacific Ocean water is considered old because it has low oxygen levels, which occur as the water ages and organisms consume the oxygen over time.

Scientists Have Concluded That Deep Pacific Ocean Water Is Old