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: When Katie was in the hospital with high blood pressure, she understood that the volume of her blood was 
 Answer: high

A: As blood volume in the body increases, blood pressure increases.
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Q: Question: If you spend a lot of time working out your muscles will be 
 Answer: larger

A: When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.
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Q: Question: Dan is swimming into shallower water. The water the shallower he goes will be 
 Answer: younger

A:
Deeper aquifers typically contain older 'fossil water.'
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