Which of the following is the first step in respiration? Carbon dioxide passes from the blood to the lungs.

Oxygen passes into capillaries to the blood.

Carbon dioxide passes into capillaries to the blood.

Oxygen is taken into the lungs.

How does drinking alcohol or using drugs put a person at risk for hiv infection? a.they improve judgment, which makes it more likely for people to engage in risky behavior. b.they impair judgment, which makes it more likely for people to engage in risky behavior. c.they impair judgment, which makes it less likely for people to engage in risky behavior. d.they improve judgment, which makes it less likely for people to engage in risky behavior.