What happens during external respiration in the lungs? Question 3 options:

Oxygen passes into the blood and carbon dioxide passes out of the blood

Oxygen passes out of the blood and carbon dioxide passes into the blood

Oxygen and carbon dioxide pass into the blood

None of the above

Oxygen passes into the blood and carbon dioxide passes out of the blood.

Explanation:

Respiration is the movement of oxygen from the outside environment (free flowing air) into the cells that from part of lung tissue and the removal of carbon dioxide in the opposite direction (i.e out of the lungs).

1. cold turkey (no outside ). about 90% of people who try to quit smoking do it without outside support -- no aids, therapy, or medicine. although most people try to quit this way, it's not the most successful method. only about 5% to 7% are able to quit on their own.

2. behavioral therapy. this involves working with a counselor to find ways not to smoke. together, you'll find your triggers (such as emotions or situations that make you want to smoke) and make a plan to get through the cravings.

3. nicotine replacement therapy. there are several types, including nicotine gum, patches, inhalers, sprays, and lozenges. they work by giving you nicotine without the use of tobacco. you may be more likely to quit with nicotine replacement therapy, but it works best when you use it with behavioral therapy and lots of support from friends and family. and remember that the goal is to end your addiction to nicotine, not simply to quit using tobacco.

explanation:

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