How do your arm muscles work to lift a mug of coffee to your lips?

Bulimia nervosa is characterized by a. a refusal to eat enough food to maintain normal, healthy body weight and/or the use of measures to produce severe weight loss. b. high fat intake and low level of physical activity. c. alternating binge eating and purging through vomiting, laxatives, or diuretics. d. normal food consumption interrupted by episodes of high consumption, resulting in obesity.

How do nicotine and tobacco cause cancer? by decreasing blood-sugar levels by damaging or changing a cell's dna by increasing heart rate by increasing phlegm and mucous production

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