Which disease would be potentially propagated in an environment without functional plumbing and in which drinking water is contaminated with sewage?

Which describes the effect of prolonged stress on blood pressure? it causes blood pressure to decrease. it has little or no effect on blood pressure. it causes the heart to pump with more force. it causes blood pressure to increase.

Exercise has no positive effects on the nervous system? true or falseu

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?