Which nutrient provides the body with quick energy? O proteins
O vitamins
O carbohydrates
O fat

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

How could you find out if that advice is based in scientific evidence?

Explain what you know about the cause of mental illnesses.