2. B: Breathing is a ventilator due to breathing. As a way to help patients get oxygen into the lungs. The oxygen blown away the oxygen of about 16-17%, which is sufficient for use in the body. Can be done in many ways, with breaths (mouth to mouth) blowing nose (Mouth to Nose)
: Breathing is a Rescue breathing Due to breathing stopped. The Body is the Oxygen remain in the lungs and bloodstream. But there is no Spare so. when stopped breathing must help breathing. As a way to allow oxygen to the lung patients. The oxygen blow out there about 16-17% oxygen which is sufficient for use in the body, can do a variety of ways, is with the whistle (. mouth to mouth) blowing nose (mouth to nose).
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