根据第一段It is commonly believed high levels of lead contained in the tap water in ancient Rome caused mental disabilities and unstable behavior among members of Roman high society and the empire finally collapsed.可知,在古罗马上流社会中发现了异常行为。故选B。 根据第二段Still, any amount of...
Why is it important to seek out natural antimicrobial products? Summarize the controversy over the effects of trace levels of chemicals. Why do we know so little about the harmful effects of chemicals? Why are saprophytes called the natural cleaners of the ...
Benzyl Alcohol is an aromatic alcohol used in a wide variety of cosmetic formulations as a fragrance component, preservative, solvent, and viscosity-decreasing agent. Benzoic Acid is an aromatic acid used in a wide variety of cosmetics as a pH adjuster and preservative. Why is benzyl alcohol ha...
While such preferences are irrational and a bit odd, some are much more than that. For example, smelling (which in effect becomes inhaling) car exhaust gases is extremely harmful to the body. In the most extreme cases, it can kill people who are exposed to large doses. Recommended Video ...
But other, less harmful things can cause it, too. They include: Medicines that contain bismuth subsalicylate, an ingredient used to treat stomach problems like diarrhea Activated charcoal, a black, powderlike substance that's used to treat some types of poisoning and is also sold as a supplemen...
#2 Food Poisoning Raw egg whites can be contaminated by Salmonella, a bacteria found in the intestines of chickens. It can also be present on the inner and outer surfaces of egg shells. To avoid the risk of salmonella, it is recommended toavoid eating egg whites everydaybut cook the eggs...
Why is the CO2 concentration in Earth's atmosphere increasing? How is the molecule ozone both beneficial and harmful to our health? Explain how oxygen can be fatal to organisms by discussing singlet oxygen, superoxide radical, peroxide anion, and hydroxyl radical. ...
Compared with traditional wires and cables, they do not contain halogen, lead, cadmium, chromium, mercury and other harmful substances, and are made of environmentally friendly and harmless materials, which are harmless to the environment and human health. Today, with the increasing awareness of ...
Are you aware that fluoride that is used to help keep teeth healthy is actually a harmful compound. The number of products that contain fluoride is actually quite high. Many people may not know it is also in our drinking water. The scary thing is fluoride is now classified as a neurotoxin...
Making sure that your dog is up to date on their vaccinations can prevent a number of infectious causes of vomiting such as parvovirus and leptospirosis. It's important to feed your dog a balanced diet as well as keep toxins and other harmful substances safely secured and out of their reach...