Answer:
in teens, its very common
Explanation:
It should be fifteen to twenty percent of north american adults
Exercise S., maybe it means to exercise and be safe. Haha!
Answer:
vavsbsbhshenenbebdbebhwhwvsvehjsbehehgegejebsvhevvdbgehavvah
We breathe in oxygen and some of this carbon dioxide. When we exhale, we breathe out less oxygen but more carbon dioxide than we inhale. The carbon we breathe out as carbon dioxide comes from The carbon in the food we eat.
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We breath in ox
