True because there are less plant life consuming the water from precipitation causing the desert-like conditions. Also less trees equals to less plants intaking carbon dioxide which causes the imbalance between the two.
The esophagus, which passes food from the pharynx to the stomach, is about 25 cm(10 inches<span>) in length; the width varies from 1.5 to 2 cm (about 1 inch). The esophagus lies behind the trachea and heart and in front of the spinal column; it passes through the diaphragm before entering the stomach.</span>
I think the answer is letter b. multivitamins. As what I have read about supplements it include vitamins and minerals and substances which come from a natural source. And also because of this substances it helps the human body maintain its well-being.
It is false. It slows down activity.
Another factor could be when working in healthcare you are dealing with many people who have a mental illness that can cause acceptance of violence.
Or they are dealing with people who have extremely temperamental opinions, therefore, they become violent.
Hope this helps!