In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Example Input: Question: What has increased the greenhouse effect? Answer: human actions
Example Output: Human actions has increased the greenhouse effect.

Example Input: Question: Enzymes speed up the rate of a specific chemical reaction and is therefore known as what? Answer: biochemical catalysts
Example Output: Enzymes speed up the rate of a specific chemical reaction and are therefore known as biochemical catalysts.

Example Input: Question: Which of the following best explains why many species of birds in New England fly south for the winter months? Answer: to find an environment with more food
Example Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Many species of birds in new england fly south for the winter months to find an environment with more food.

