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.

Question: Mona lives in a nation that uses a lot of fossil fuels. What would happen to her countries levels of air pollution if they were to decrease their usage? 
 Answer: decrease
Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.

Question: If Mona is adjusting the pH levels of her fish tank and she makes the pH lower, what happens to the baseness of the water? 
 Answer: lower
The higher the pH value is, the stronger the base.

Question: Will lives in England and Tony lives in Ethiopia. Whose country likely produces more hazardous waste? 
 Answer: Will

Countries with more industry produce more hazardous wastes than those with little industry.