Its most likely for a urinal problem or erectile dysfunction
Answer:
Osmosis is a special type of diffusion, namely the diffusion of water across a semipermeable membrane .
I'm not sure if I understood correctly your question .
Two ways HIV/AIDS not spread through sex ...
By blood transfusion (there was a scandal in France and other countries in the eighties ....many people got HIV because of this ; it was called the scandal of contaminated blood...)
The other one could be a fight between two people with severe bleeding injuries; if one of them is HIV, it may contaminate the other one.
Or someone willing to help and look after a cut, if this person has a small cut as well, he may be contaminate by blood.
As blood is the only way of contamination, people have to be careful when helping someone bleeding if they are bleeding too.
Usually, in hospitals, dentists, they have to use gloves
Hope I helped
