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).
Stroke is a risk factor for babies with congenital heart disease, blood disorders such as sickle cell disease, and infections including meningitis and encephalitis. Premature babies, whose blood vessels are more fragile, can suffer bleeding in the brain known as hemorrhagic strokes. Stroke can also occur when mothers have a history of infertility, or preeclampsia, or antiphospholipid syndrome, an immune-system disorder that can cause recurrent miscarriage. But in 10-20 percent of cases, the cause of stroke is unknown. What Are the Signs? Infants might have seizures or twitches in only one arm or one leg, show a weakness on one side of the body, or have delays with their speech as well as with crawling and walking.