What could happen to the groundwater reservoir as the population in East Ferris increases?

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Read The Earth System: Investigating Water Shortages

What could happen to the groundwater reservoir as the population in East Ferris increases?

If the population in East Ferris increases, they would have to use the groundwater reservoir until emptying it, leaving them without any source of fresh water.

Explanation:

The problem in the fictional East Ferris si that they only have the groundwater reservoir as a source of freshwater, unlike West Ferris which also has lots of rain as an added source of freshwater.

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