What are bursae? (i need it summed up into simple words)

eating disorders is a fatal illnesses that cause severe disturbances to a person's eating behaviors. obsessions with food, body weight, and shape may also signal an eating disorder. common eating disorders include anorexia nervosa, bulimia nervosa, and binge-eating disorder.

b) the heart is a pump made of muscle and that is difficult to grow in the lab.

answerbps;