Down’s syndrome is one organic cause of mental deficiency. t or f

Christopher came down with chicken pox after spending time in his child’s day care. the chicken pox represents what link in the chain of transmission in this scenario?

If you are having a hard time lifting something, you should arch your back. a. true b. false

Which food preservation method can people use at home? a. fermentation b. irradiation c. pasteurization d. thermal processing