The leading cause of morbidity and mortality in the United States is ____
a. cancer
b. HIV
c. cardiovascular disease
d. diabetes mellitus
c
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Which of the following conditions affecting infants is least likely to indicate the immaturity of the gastrointestinal tract?
A. colic B. gastroesophageal reflux (GER) C. unexplained diarrhea D. constipation E. hypothyroidism
It would be most difficult for the body to maintain homeostasis if over several days someone had an inadequate intake of
a. calcium b. sodium c. iron d. fluoride
The absence of reinforcement following an undesirable behavior is:
a. positive reinforcement b. punishment c. extinction d. avoidance
Which of the following statements about lead exposure is false?
A) Lead toxicity can occur from exposure to contaminated soil, water, and air. B) It can take over a year of treatment to reduce blood lead levels. C) Lead can stay in the body for 20 years or more and is principally stored in the bones. D) Lead exposure in children has increased in recent decades.