Researchers who studied people injured in the 9/11 attacks found that the injured later suffered from these results demonstrate how stress is linked to the development and progression of a variety of physical illnesses and diseases.

significantly elevated rates of heart disease

Explanation:

The people injured in the 9/11 atacks became more prone to elevated rates of heart disease, this could be due to post traumatic stress, which eventually with time will decrease the quality of life and high stress levels can produce and affect the health of people that suffer from it.

answer; the region experienced a surplus of food;

answer; the sound of a train whistle makes a woman think of an old friend; //

the smell of grass makes a by feel that spring is the best; (apex);