Answer:
Agree. Yes, you can but you can also inhail through mouth and exhail by mouth or do both by nose. For example, ever notice when you are trying to hold your breathe and just need to let it out? Well that is because carbon dioxide is buliding up. Your body breathes in oxygen and releases carbon dioxide.
Explanation:
None of this is copyed and pasted!
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goodluck!
Answer:
It can affect the heart valves and the heart walls.
Explanation:
Rheumatic fever is a very important cause of heart disease because it can affect the muscle of the heart and the valves of the heart causing valve stenosis or valve regurgitation, which leads to a heart that can not efficiently pump blood to all the body.
Answer:
(x+y)^4
Explanation:
im pretty sure because you just multiply by 4 instead of adding
