When exposed to smoke, hydrogen cyanide may play a role in rendering firemen and bystanders incapable of performing self-rescue.
HCN is a toxin that spreads throughout the body; it is hazardous because it inhibits cytochrome oxidase, which stops cells from using oxygen. Loss of awareness, respiratory arrest, and finally death arise from inhibition of the last stage of electron transport in brain cells.
Higher HCN exposures cause cardiovascular collapse, tremors, cardiac arrhythmia (which may not manifest for two to three weeks after the fire exposure), coma, respiratory depression, and respiratory arrest. Inhaling minute concentrations of hydrogen cyanide can result in headaches, weakness, nausea, and vomiting. Larger doses might result in fainting, convulsions, gasping, fast pulse, irregular heartbeat, and even death. In general, the severity of the symptoms increases with the seriousness of the exposure.
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Answer:
That he is concerned many people are using their phones too much.
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Explanation:
Epidemiologic research helps us to know the certain number of people that has a disease or disorder , rate at which the numbers are changing and also how the disease or disorder affects the econmy.
The three components of cycle of epidemiologic research are theory, hypothesis and variables.
The cycle of epidemiologic research guides the researchers in searching of etiology of diseases.
Hypothesis.........gives an idea on the fact which has to be criticized.......teenage binge drinking
Variables...........include operationalization of the hypothesis.............survey of teens on environmental effect on binge drinking in teens.
Theory ...............includes deep study based on the variables........% of teens influenced /not influenced by environment
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One of the main goals of the US Civil Rights Movement was to make sure that all races have the same laws and chance as other races in America.
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