alleryAfter water evaporates, about how long does it stay in the atmosphere on average?
AAbout 9 months
BAbout 9 years
CAbout 900 years
DAbout 9 days
Answer & Solution
Correct answer: D. About 9 days
1. Residence time is the average time a water molecule spends in a store.
2. In the atmosphere it is only about 9 days before falling as precipitation.
3. Months, years or centuries describe slower stores such as groundwater and ice.
_Source: Wikipedia, Water cycle, Residence times_
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