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.

Input: Consider Input: Question: Water falling down a tall mountain will move 
 Answer: faster

Output: Water flowing over a steeper slope moves faster and causes more erosion.


Input: Consider Input: Question: An increase in birth rates indicates a/an _____ in the food supply. 
 Answer: increase

Output: Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.


Input: Consider Input: Question: Evan measures the pH of the ocean at 7. Last century it measured at 6. A(n) _____ in greenhouse gases likely resulted in this change. 
 Answer: decrease


Output: An increase in greenhouse gases will increase the changes that are already being seen including in ocean acidity.