Question

due to the current pandemic, many people are using more hand sanitizer than ever before. what effect might this have on bacteria in regards to their resistance?

Explanation:

When hand sanitizer is over - used, bacteria may develop resistance. This is similar to the concept of natural selection. Bacteria with some level of inherent tolerance to the sanitizer's active ingredients (e.g., alcohol) may survive. These surviving bacteria can then reproduce, passing on their genes for tolerance. Over time, if the selective pressure (frequent use of sanitizer) continues, a population of bacteria with increased resistance to the hand - sanitizer may emerge.

Answer:

Bacteria may develop increased resistance to the hand - sanitizer over time due to natural selection acting on bacteria with inherent tolerance to the sanitizer's active ingredients.