air.”Theyfalloffplasticobjectsandaremovedby thewind,justlikedust. 3 Findingtheseplastics inArcticsnow meansthatwemaybreathethem in.Anevenhigheramountof microplastic was foundinthesnowaroundcities. Thehighconcentrationsfoundinsnowsamplessuggestmicroplastics,whichcontainrubber orchemicalsusedinsyntheticfabrics(混合...
Analytical chemistry is concerned with the chemical characterization of matter and the answers to two important questions: what is it (qualitative) and how much is it (quantitative). Chemicals make up everything we use or consume, and knowledge of the chemical composition of many substances is im...
sconflictwithherson?A.Toleadintheuseofperiodintexting.B.Toemphasizethegreatpowerofwords.C.Toshowyoungsters?attitudestowardstexting.D.Tosuggesttherightuseofpunctuationmarks.( )6.WhyisJuanAbenanteRinconmentionedinthetext?A.Tomakeassessmentsontherecentstudy.B.Toconfirmthefindingsoftherecentstudy.C.Toputforwa...
The article fails to mention exactly HOW these chemicals are being dispersed. Is this by Air Force planes? Surely not by commercial airliners. If it is the former, I would think we would have pilots and ground crew members blowing the whistle on this. Incidentally I knew Francis Mangels when...
It is concerned with the substances that occur in nature-the minerals of the earth,the gases of the air,the water and salts of the seas,the chemicals of the living creatures, and also with the new substances created by humans. It is concerned with natural changes-the burning of a tree ...
glossaryare different from the normal vocabulary. It is a branch of natural science that examines the building blocks of matter, including the atoms, molecules, and ions that make up compounds and their composition, structure, behaviour, and changes that occur when they interact with other things...
Fire does not actually require oxygen. Yes, the oxidizer most often encounteredisoxygen, but other chemicals also work. For example, burning hydrogen with chlorine as an oxidizer also produces a flame. The product of the reaction is hydrogen chloride (HCl), so the fire consists of hydrogen, ...
Environmental chemists study how chemicals interact with the natural environment, characterizing the chemicals and chemical reactions present in natural processes in the soil, water and air. For example, scientists can collect soil, water or air from a place of interest and analyze it in a laborator...
10.In what way does sweat replace harmful battery chemicals? A.The sweat reacts with the chemicals and stores energy. B.The sweat is mixed with electrolytes and changes its chemical makeup. C.The sweat gets rid of some harmful chemicals. D.The sweat contains minerals called electrolytes that...
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