The first one is b
Question 10 is Heart rate
Question 12 is perimeter
Thats all i know sorry
Answer:
Your muscles will require less oxygen to move and they will produce less carbon dioxide. This will immediately reduce the amount of air you will need to breathe in and out for a given exercise.
Developing self-esteem is important because it helps you <span> think good concerning yourself and it can also influence your imaginative thinking.</span>