Most of the mercury emitted in South and Central America was through ______? A.)artisanal and small-scale gold mining B.)fossil fuel ,combustion C.)metal production D.)cement production
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- b) Many bio-chemical processes in the human body must remain at equilibrium to sustain life. At times, some situations cause the disturbance to the natural equilibrium causing serious health issues or even death. Briefly explain how carbon monoxide poisoning effects on the body and equilibrium before and after treatment. Disturbance effects on the body equilibrium before and after treatment Carbon monoxide poisoningExplain why you agree or disagree with each of the following statements: a. We should not worry much about exposure to toxic chemicals because almost any chemical, at a large enough dosage, can cause some harm.Trivalent and pentavalent arsenic produce different effects on cells, yet there is little distinction between the two forms of arsenic when discussing signs and symptoms of poisoning. Why? Want solution ASAP Your answer
- The following are the six most common elements in the human body: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Each of these elements is heavier than hydrogen and helium. Explain how and where these elements formed.Critically comment on the following statement: Cadmium does not show molecular homology with other essential metals in the human body but plays a key role in disrupting important neurological processes. Over a lifetime, this heavy metal accumulates in the brain leading to symptoms of Parkinsonism.The elements magnesium (Mg) and calcium (Ca) play vital roles in maintaining human health, including processes like bone building. The majority of Americans have lower levels of magnesium than health experts recommend. Propose a possible hypothesis that could explain this phenomenon.
- Many radioactive isotopes are used in medicine for imaging and treatment purposes. The specific isotopes used depends on the particular organ or body system being studied (for example, Xe-133 is used to image lung function and blood flow.) Technetium-99m is a common radioactive isotope using for a variety of medical applications. It is produced from the decay of Molybdenum-99 and has a half-life of 6.01 hours. What are some of the applications of Tc-99m? While harder to access, another radioactive isotope of technetium, Tc-93, has a half-life of 2.73 hours. If it were easier to harvest, would this be a good substitute for Tc-99m? (remember to explain why for full credit) While Tc-99m has a half-life of 6.01 hours, its decay product has a half-life of 213,000 years. While the medical community considers it to be reasonably safe, within the limits of testing, does this make sense considering both chemical and biological principles? What are possible ways that you might deal with or…the percentage of naturally occurring elements making up the human body are similar to the percentages of these elements found in other organisms. How could you account for this similarity among organisms?The French chemist Antoine Lavoisier was elected to the French Academy of Sciences for his discovery that roasted metals weighed more than unroasted metals, due to the creation of: metal carbonates from exposure to carbon dioxide gas metal hydrides from exposure to hydrogen gas metal oxides from exposure to oxygen gas metal nitrates from exposure to nitrogen gas metal sulfides from exposure to hydrogen sulfide gas
- when solar radiation crosses space and moves towards earth.it consists of many types of radiation together these radiation types are known as electromagnetic spectrum. which properties differentiates among the different types of radiation found in the electromagnetic spectrum.The percentages of naturally occurring elements making up the human body (see Table 2.1) are similar to the percentages of these elements found in other organisms. How could you account for this similarity among organisms?Collectively, C, H, O, and N comprise approximately what percent of all elements in the body? O about 96% around 16% Ⓒ 100% O approximately 46%