B lack of safety equipment
Lymphatic tissue. patches are small masses of lymphatic tissue found throughout the ileum region of the small intestine. Also known as aggregated lymphoid nodules, they form an important part of the immune system by monitoring intestinal bacteria populations and preventing the growth of pathogenic bacteria in the intestines.
A) Fad diets are extremeand do not include balanced meals. They are usually hard to maintain because of there extreme restrictions. Also the weight one loses while on a fad diet is generally gained back as soon as a person stops dieting
I believe the answer you are looking for is the excretory system.
Dopamine is a reaction in the brain that causes desire.