High concentrations of carbon monoxide kill in less than five minutes. At low concentrations it will require a longer period of time to affect the body. Exceeding the EPA concentration of 9 ppm for more than 8 hours is suspected to produce adverse health affects in persons at risk.
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They can always refer to the guidelines that created by the American Medical Association or Research group such as American Heart Association. Those two organization have been proven to deliver researches result with a really high credibility. By using the guideline, they can determine whether the patient need the medication or not
True- Because there's a thing called "Stranger Danger" because if you think you know the person, but you really don't. People lie online all the time, regarding there age and past things. =) Hoped this helped
Proteins are the nutritional class which builds and maintains cells and tissues. The type are often called "structural" since they are like the scaffolding of cells and tissues.