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: Jeff put a rock under very minimal metamorphosis. The rock probably _____ its original form. 
 Answer: resembles
[A]: The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.


[Q]: Question: Compared to a ripple in a pond caused by a drop of rain, would a wave in the ocean have 
 Answer: more distantly spaced particles in its rarefactions
[A]: Places where particles of a medium crowd closer together are called compressions, and places where the particles spread farther apart are called rarefactions. The more energy the wave has, the closer together the particles are in compressions and the farther apart they are in rarefactions.


[Q]: Question: Ron is trying to figure out how old some isotopes are. The isotopes are decaying very quickly, so they are likely specimens that are 
 Answer: younger
[A]:
Because these isotopes decay more slowly, they can be used to date much older specimens.