Answer:
ok I already did but I will
With less blood flow, your heart doesn't get the oxygen it needs, and that can cause chest pain, called angina, especially when you exercise or do heavy labor. It also can affect how well your heart pumps and make the rest of your body short on oxygen, too
Explanation:
Answer:
Oxygen needs a fuel to burn with. Oxygen tanks can explode if they contain flammable material, and in the presence of pressurized pure oxygen there is not much that can't become flammable. ... The actual cause of the explosion will be due to the increase in temperature and pressure exceeding the burst strength of the tank.
I think its D because when you exercise, you usually try to lose weight or maintain it and not gain weight
