The pressure decreases because there is less density meaning there are less atoms or molecules in a space. Gravity determines the density by pulling in more molecules towards â¦ the center of the Earth.
Therefore, about 85-90 percent of children with hereditary retinoblastoma develop multiple tumors that affect both eyes (bilateral disease). The remaining 10-15 percent of patients with hereditary retinoblastoma develop only a single eye tumor (unilateral disease).
Fifth disease is a mild rash illness caused by parvovirus B19. This disease is usually not a problem for pregnant women and their babies. About half of pregnant women are immune to parvovirus B19, so they and their babies are usually protected from getting the virus and fifth disease. Pregnant women who are not immune usually have only mild illness if they are exposed to fifth disease. Also, their babies usually do not have any problems.