Answer:
A condom is a sheath-shaped barrier device used during sexual intercourse to reduce the probability of pregnancy or a sexually transmitted infection.
Explanation:
its uses are given above
A heterogeneous mixture composes of non- uniform components, so the concrete would be the answer, because you can tell the components from one another.
Cant answer both. Will answer one.
Explanation: HIV is an issue in uganda. Could not be complete
i want to say global warming but that also affets the atmosphere