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: Katie is looking at solid reactants, and is wondering how they will react. The reaction rate is increased in surface areas which are 
 Answer: larger

A: Therefore, increasing the surface area of solid reactants increases the reaction rate.
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Q: Question: When we pack a fewer things into a box it becomes 
 Answer: less dense

A: The more tightly packed the particles inside the material are, the more dense we say they are.
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Q: Question: Tony wanted to prevent cramps by not warming up. This _____ blood flow to his muscles. 
 Answer: decreases

A:
Warming up exercises increases the blood flow to the muscles and increases the heart rate.
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