Answer:
Experiments can show cause-effect relationships
Explanation:
Answer: Antiretroviral therapy is the use of HIV medicines to treat HIV infection. ART helps people with HIV live longer, healthier lives and reduces the risk of HIV transmission.
Explanation:
I'm pretty sure it is physical and mental development
Explanation:
I don't no ask a docter ok
<span>It is a vacuum effect. The lungs have gotten used to their size and shape, and they are comfortable this way. When a person forcibly exhales, it constricts the lungs. When a person relaxes, the lungs return to their normal shape as they took in air. The only ventilation is the trachea, and it forces air in.</span>