Pretty sure the answer is A
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.
Learn more about hydrogen cyanide:
brainly.com/question/27179806
#SPJ4
I believe it is D oxidation
<span>social contagion
This happens when there is the inclination for certain conduct displayed by one individual to be duplicated by other people who are either in the region of the first person who displayed that behaviour . It was initially postulated by Gustave Le Bon in 1895</span>
Answer:
The two categories of sources of credit are formal and informal sources.
Explanation:
The formal source of credit as the name implies is an official means of obtaining loans. Its features include,
1. It is administered by corporate institutions like banks and other lending bodies.
2. It is regulated by a body in the relevant country.
3. There are recognized and standard interest rates that must be paid by the borrower.
4. It is guided by laws which both parties are expected to keep.
The Informal sources of credit are unofficial means of borrowing funds There features include,
1. They can be obtained from friends, relatives, and acquaintances.
2. There are no standard interest rates as these are determined by the lenders.
3. There are no official bodies to regulate the lending process.
4. They are mostly used by poor businessmen and women who need small loans.
