Does the foundation laid by 'Each individual's survival curve, or the probability of surviving beyond a given age, should shift as a result of an environmental quality improvement.' logically support 'Environmental quality has no impact on the life expectancy of people who are already old.'
Each individual's survival curve, or the probability of surviving beyond a given age, should shift as a result of an environmental quality improvement.###Environmental quality has no impact on the life expectancy of people who are already old.