ATP/CP or phosphagen pathways
I think the circulatory system is the best body system because we need the heart to stay alive, many people live with only one lung. but we need the respiratory system to let oxygen in, and let carbon dioxide out.
Answer:
health is wealth of the country so it is related with economic and political aspects of a country
Go to the gym, work out. practice tour routine. Also, get a friend who does know to help! if that doesn't work, try again next year?
