They knew traits were inherited, but they did not know why.
Very simple. At rest, you have a number of bpm. After exercise, the heart can't return abruptly to the rest speed, and it keeps a faster rate for a while.
Im thinking C. The skeletal system but not 100% sure.
Depending on how many students were infected this answer will vary. The best answer I can give you is it would be what ever the starting value was then add three for every student they contacted then add another three for those students. I am sorry if this sounds confusing, I hope I was of any help.
It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning.
