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: Don is looking at electromagnetic waves, and sees that the one's he observing have higher frequencies. Don is able to know then that the photons have energy that is 
 Answer: higher
[A]: In electromagnetic waves with higher frequencies, photons have more energy.


[Q]: Question: If an animal is able to eat food more difficult is it more or less likely to reproduce? 
 Answer: less
[A]: Natural selection is the process by which living things with beneficial traits produce more offspring, so their traits become more common over time.


[Q]: Question: If something has a pH value of 1 it would be 
 Answer: acidic
[A]:
The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.