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.

Example Input: Question: Sarah ate a piece of shark meat for dinner, Sarah's levels of toxic metals have 
 Answer: increased or
Example Output: The higher up a food chain that humans eat, the greater the levels of toxic metals they take in.

Example Input: Question: Eric is looking at the shortest electromagnetic wave he has seen today. This wave has the _____ frequency of the day. 
 Answer: highest
Example Output: Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

Example Input: Question: If Jim is tuning his shortwave radio and he makes the crests higher, what happens to the amplitude of the waves? 
 Answer: increase
Example Output:
The higher the crests are, the greater the amplitude of the wave.