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When you hold your breath, CO2 levels will increase in your body, which, simply put, makes your body oxygen-starved. This, then, will trigger a reaction that will attempt to get as much oxygen throughout the body as possible, and this is done by increasing the heart rate.
40-49
29 thousand feet
Mercalli Scale
No, I wouldn't think so.
10kg
1500 j
537.5 J
work=mass*speed,5*2=10
1,500 J
3000j
312.5 J
30 J
3000 J *Shelby Sarah*
750 j
375 Js (((((((((((: this is the right answer
Yes, but if you increase the speed of your breathing too much you can hyperventilate and / or pass out.