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: Milo was moving some metal balls around. If he were to move the balls closer together, what would happen to the force of gravity? 
 Answer: increase
[A]: Objects that are closer together have a stronger force of gravity.


[Q]: Question: When Mike has low blood pressure, Mike knows that the volume of his blood is 
 Answer: low
[A]: This is because the lower blood volume in the vessels exerts less pressure on the vessel walls.


[Q]: Question: Would the use of vinegar instead of tap water in a reaction produce 
 Answer: more hydrogen ions
[A]:
A stronger acid produces more hydrogen ions than a weaker acid.