instruction:
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.
question:
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
answer:
Objects that are closer together have a stronger force of gravity.


question:
Question: If Milo has dark skin and Jerry has light skin, which person will sunburn less easily? 
 Answer: Milo
answer:
Light-skinned people get sunburned more quickly than people with darker skin.


question:
Question: A pH value of 9 has a _____ acidity level than a pH value of 8. 
 Answer: lower
answer:

Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.