TASK DEFINITION: You are given a sentence and your task is to generate another sentence that supports the given input.
PROBLEM: Aquifers present the advantage of having large to huge volume storage capacity with a very low flow and are easily accessed through dug-wells or bore holes, either pumped or flowing (artesian wells) or through springs.

SOLUTION: Dig a well allows people to access water in an aquifer that does not flow from a spring or a geyser.

PROBLEM: Adaptations result from a trait being favored either for survival or reproduction

SOLUTION: A(n) favorable trait is an adaptation.

PROBLEM: The eyes, ears, and respiratory system all start to develop at 4 weeks.

SOLUTION:
The development of the respiratory system in the fetus begins at about 4 weeks.