Greenhouse gases can be removed from the atmosphere by various processes, as a consequence of: 1  a physical change (condensation and precipitation remove water vapor from the atmosphere). 2  a chemical reaction within the atmosphere. 3  a physical exchange between the atmosphere and the other compartments of the planet.
What we can say is that the vast majority of people infected with HIV will develop AIDS sometime during their life (an average of 10 years or more after infection), and with early intervention and treatment, they could potentially live with AIDS for many years more.
A person may be âHIV positiveâ but not have AIDS. An HIV infected person may not develop AIDS for 10 years or longer. A person who is HIV positive can transmit the virus to others when infected blood, semen or vaginal fluids come in contact with broken skin or mucus membranes.