a如有带来不便,敬请原谅 If has brings inconveniently, asks respectfully to forgive[translate] aArgon gas is non-toxic in itself, but would results to apnea at high concentrations. 氩气体本身是无毒的,但会结果对呼吸暂停以高浓度。[translate]...
towshaker toxanon toxic agents toxic bachelorsby dan toxic effect of other toxic gas toxic gas indicator toxic myocarditis toxic nightshade toxic response toxic traditional chi toxic vapour toxichepatitis toxicological evaluat toxicology of food sa toxicosis toxicpneumonia toxin shock syndrome toxin sores ...
Elements and Matter: Matter, including living matter, is comprised of elements. There are 118 recognized elements, 92 of which occur in nature. Elements consist of atoms of that element. Each element is unique because each element's...
Mercury is a very toxic or poisonous substance that people can be exposed to in several ways. If it is swallowed, like from a broken thermometer,it mostly passes through your body and very little is absorbed. If you touch it, a small amount may pass through your skin, but not usually e...
Air pollutionalso contributes to depletion of the ozone layer, the region of the atmosphere that protects the Earth from harmful types of ultraviolet radiation. Acid rain, which is basically rainfall that contains toxic chemicals along with ordinary water, is also a possible side effect of long-te...