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: Eric hears a sound from far away. If this is the first sound he heard, this sound is likely 
 Answer: strong
Example Output: The farther the sound waves travel away from the source, the more spread out their energy becomes.

Example Input: Question: Chris is studying Lake Michigan. He takes soil samples from the Lake in two places. The first sample he takes from right near the shore. The second sample is taken from the middle of the lake. The _____ sample will have greater dissolved nutrients in it. 
 Answer: first
Example Output: Water near shore generally has more dissolved nutrients than water farther from shore.

Example Input: Question: Water found on Earth's cold regions is _____ dense that water found on Earth's hot regions. 
 Answer: more
Example Output:
Water becomes more dense when it is colder and when it has more salt.