Use the drop-down menus to select the best answers. At high altitudes, less oxygen is in the air. That might result in the body relying more heavily on
.
A sleeping person is most likely using
to produce accessible energy.

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Hiv can be transmitted through oral sex. you can get hiv through vaginal fluid and semen. if you have an open sore or cut in or near your mouth and an you get the semen or vaginal fluid of an infected person in those cuts or sores, you can get hiv