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: Sinking lower in the mesosphere, we encounter _____ temperatures. 
 Answer: higher
answer:
In the mesosphere, temperature decreases as altitude increases.


question:
Question: Mike is digging for old rocks. Mike dig downs very, very shallow, and he expects the rocks there to be 
 Answer: younger
answer:
Therefore, deeper rock layers must be older than layers closer to the surface.


question:
Question: If Jim moves some particles of matter farther apart, what will happen to the rate at which they can pass vibrations on to nearby particles? 
 Answer: decrease
answer:

When particles of matter are closer together, they can more quickly pass the energy of vibrations to nearby particles.