How does the upper respiratory system support good health?

by moistening, heating, and purifying air as it proceeds down the airways

by removing dangerous carbon dioxide gases built up in the tissues

by providing oxygen to the cells

by preventing people from swallowing air

i am 100% sure that michael won medal in five different olympics.

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.

controllable stroke risk factors include:

high blood pressure

atrial fibrillation

uncontrolled diabetes

high cholesterol

smoking

excessive alcohol intake

obesity

carotid or coronary artery disease

explanation: