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: Don notices that the patient's heart is expelling less blood with each stroke. The patient's heart has to beat _____ often to maintain consistent blood flow. 
 Answer: more
Example Output: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.

Example Input: Question: While in the lab, Sharon and Joe were testing alkenes; Sharon's alkenes were much larger than Joe's. The melting point of Sharon's alkenes will be _____ than Joe's. 
 Answer: lower
Example Output: Larger alkenes have lower boiling and melting points.

Example Input: Question: Ian wants the transpiration rate to rise in his leaves, so he will do what with the humidity levels 
 Answer: decrease them
Example Output:
As humidity increases, the water potential gradient across the inside and outside the leaf become more equal, and so the rate of transpiration decreases.