What is the control group of an experiment?

Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure

Which organelle stores most of a cell’s dna?