In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Q: Question: Dana washes her hands a lot, so her bacteria has mutated to help to resist antibiotics. As that bacteria decreases in numbers, the mutation becomes 
 Answer: rare

A: Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.
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Q: Question: Mike adds more and more resistors into his parallel circuit, which causes the total current strength to 
 Answer: increase

A: As more resistors are added in parallel, the total current strength increases.
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Q: Question: If Milo starts rubbing two surfaces together slowly and then increases the speed, what happens to the amount of energy produced? 
 Answer: increases

A:
Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.
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