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:
The only role of the wife was to be a servant to their husbands and to produce sons of them so the sons could carry on the family name. Men ruled the household and had complete control over his wife.
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Answer:
Concrete operational thinker.
Explanation:
Dee has now become a concrete operational thinker because she has now grown to think more rationally.
This stage by Piaget is the 3rd in his theory of cognitive development. Dee is now mature enough to use logical reasoning. From what we can see, her thinking is now more concrete and sophisticated. But she can only apply this logic to physical objects.
Answer:
It is referred to as economic geography.
Explanation:
Economic geography is a study of human's economic activities under varios conditions and is oftenassociated with production, location, distribution, consumption, exchange of resources, and spatial organization of economic activities across the world.
By comparing these economist canunderstand the structure of the area's economy and its economic relationship with other areas around the world.
