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: Keith is showering, and is washing himself using a bar of soap, and then again with a loofah. Keith's skin will get better exfoliation, due to the greater friction, when he washes his body using the 
 Answer: loofah
Example Output: Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.

Example Input: Question: Dave is taking water samples from various parts of Lake Erie. He takes the first sample very far from the shore line. The second sample he takes from the edge of the lake. He expects that the _____ sample will have more nutrients in it/ 
 Answer: second
Example Output: Most nutrients are washed into ocean water from land. Therefore, water closer to shore tends to have more nutrients.

Example Input: Question: When we are trying to move through the thermosphere the lower we go the _____ it will feel 
 Answer: colder
Example Output:
In the thermosphere, temperatures increase as altitude increases.