Answer:
Blood has three main functions: transport, protection and regulation. Blood transports the following substances: Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the body.
Explanation:
Hit their chest and i fthere is still no response , stand behing them with your arms over their stomach and squeeze .
<span>The option that best describes their heart rates during this activity is A. low. They aren't doing much at that particluar moment - they are just walking around, talking and laughing. There isn't much there to rise their blood pressure and thus heart rate, which remains low. Moderate, vigorous, and dangerous heart rates would require much more vigorous activities. </span>
