푸틘 [280057] · MS 2009 · 쪽지

2011-10-17 22:27:26
조회수 227

빈칸 문제 3

게시글 주소: https://orbi.kr/0001883634

The law of conservation of mass states that mass can be neither created nor
destroyed. This notion of mass balance means that if there is an increase in the
amount of a chemical present in a given environment such as a lake, this cannot
be due to some sort of 'magical' process of formation. (A) , it is the result of
the chemical having been either transported into the lake from elsewhere or
produced by a chemical or biological reaction from other compounds which have
already existed in the lake. (B) , if these reactions were responsible for the
mass increase of this particular chemical, they must have caused a corresponding
decrease in the mass of one or more other compounds.
① For example - Therefore
② Instead - Similarly
③ Besides - However
④ In fact - Likewise
⑤ Instead - For example


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