Why might the pure water well prove to be an unreliable water source in the future

Wells can dry up or become contaminated, this question isn't really clear so it's hard to say. It can become contaminated by underlying salt water, heavy metals, or man-made pollutants. Wells also dry up frequently and become unusable.

step 1: replication fork formation.

step 2: primer binding.

step 3: elongation.

step 4: termination.

explanation:

hope this !