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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?
Answer:
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.