No, it's because we need to breathe. Your body needs oxygen. Air pressure has little to nothing to do with it as far as I know.
The report reveals that common food dyes pose risks of cancer, hyperactivity in children, and allergies. The food industry dumps over 15 million pounds of the dyes studied into the food supply each year. Three of the dyes carry known carcinogens, and 4 can cause serious allergic reactions in some consumers.
here. I found this for you. don't know how accurate but it may help.
Their chemical breakdown begins in the stomach<span> and continues in the large intestine. Proteolytic enzymes, including trypsin and chymotrypsin, are secreted by the </span>pancreas<span> and cleave proteins into smaller peptides. Carboxypeptidase, which is a pancreatic brush border enzyme, splits one amino acid at a time.</span>
I believe that C. The author uses comparison and contrast to organize ideas. is the answer that you are looking for, I hope this helps!