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:
Besides silk, the Chinese also exported (sold) teas, salt, sugar, porcelain, and spices. Most of what was traded was expensive luxury goods. This was because it was a long trip and merchants didn't have a lot of room for goods. They imported, or bought, goods like cotton, ivory, wool, gold, and silver.
Explanation:
Answer: National Health Education Standards
Explanation: The National Health Education Standards list the expected knowledge children/students should have when it comes to health matters. The standards vary across different school levels. It starts from the required pre-kindergarten to Grade 2 where children are expected to understand the relationship between behaviors and the impact on their health as well as understand why they need to seek healthcare. By grade 12, students are expected to know the effects of their environment, including the family, on their health as well as predict how a behavior will affect their health.
Answer: First start by reviewing the instructions. Then ask your teacher for clarification if you do not understand the assignment. Conduct research by going to the library or using the internet. If you are still confused, seek tutoring, study with a friend, or ask specific questions on Brainly.
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Explanation:
Answer:
The people of the Maghreb and the Sahara speak various dialects of Berber and Arabic, and almost exclusively follow Islam. Islam is most likely the single biggest cultural influence in North Africa. Islam is the dominant religion in North Africa and some of the Horn of Africa, which is majority Christian.
