Weegy: Down syndrome is a genetic disorder caused when abnormal cell division results in extra genetic material from chromosome 21. (More)

Weegy: Down syndrome is the most common genetic cause of severe learning disabilities in children, occurring in one in every 700 to 800 infants.[ Increased understanding of Down syndrome and early interventions make a big difference in the lives of both children and adults with Down syndrome. ] (More)

Weegy: Angiotensin is a protein hormone that causes blood vessels to become narrower. (More)

Weegy: Renin is a central hormone in the control of blood pressure and various other physiological functions. (More)

Weegy: Walking pneumonia is when you have everything else but you're not knocked out on your ass. Your lungs are filled with fluid and you're bronchial. It's even more dangerous because you think you're well enough to function normally. I had it. [ Yuck!! ] (More)