Thank everyone who answers questions helpfully, I REALLY appreciate you all. I will mark everyone who answers Brainliest to show how much I thank you. How do I mark brainliest?

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?

American college students invented football by combining what two sports?

The amount of oxygen that is actually used by the body during the rest or a hand workout is determined by the heart rate, the stroke volume, and the amount of a. blood circulating in the vascular system b. oxygen removed from the vascular system c. oxygen provided to the vascular system d. blood that individual has in the body e. hemoglobin in the red blood cells