Hiv is a virus that usually infects
a. only homosexual males.
b. only homosexual and heterosexual females.
c. young adults under the age of 30.
d. people who participate in high-risk behavior

You are travelling on a long non-stop flight from tahiti to tampa. you have been in the air for about 7 hours and have not moved, since you boarded the plane at tahiti. you need to use the rest room and on standing up feel dizzy. the best explanation for your dizziness