name two medical technologies that have helped combat the spread of disease in cities. Explain how each technology has helped

Masks and Vaccines (RNA vaccines but normal vaccines help as well)

Explanation:

Masks: As we can tell cities that have a mask mandate have lower corona numbers

Vaccines: Vaccines give your body the antibodies that it needs to protect your body from infection without the virus. RNA vaccines are better than the normal vaccines because they are going to be produced faster than normal vaccines

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.