A man in a red shirt is standing next to a woman in a blue dress. They are both holding hands and smiling at each other. The company's financial reports are not publicly available, so we cannot determine whether they are profitable or not. The nature of the hypothesized relationship is that there might exist a PM concentration level below which further reductions no longer yield premature mortality reduction benefits. Therefore, it is unlikely that reducing PM concentration levels will lead to a decrease in mortality rates.
yes
it is not possible to tell
no