<p>The information age has ushered children into a global society, (this situation causing educators to lament) a lack of texts that explain the diversity of cultures.
Correct: a situation causing educators to lament
Incorrect: which is the cause of educators lamenting
why is the incorrect one incorrect</p>
<p>Many changes occurred while she was president of the (college; these changes increased its educational quality and effectiveness.)
Correct: college; these changes increased both the educational quality and effectiveness of the college.
why is a wrong</p>
<p>In Germany, foresters discovered that trees killed by acid rain had begun to die four years earlier without any signs of disease shown then.
Correct: earlier, even though the trees had shown no signs of disease then
why is a wrong</p>
<p>In many states, they have laws allowing students to vote where they choose, either at their homes or at their college residences.
Correct: the laws allow students to vote wherever
why</p>
<p>In spite of often irreparable damage to the natural environment, strip-mining was once used to supply half the coal produced annually in the United States
Correct: Though strip-mining often caused irreparable damage to the natural environment, it</p>
<p>Long thought of as a quiet, stuffy place where people just borrowed books, libraries have been changing their images dramatically over the last few year.
why is B wrong</p>
<p>After Eliza, the heroine of Shaws Pygmalion, is transformed from a flower girl into a gentlewoman, having realized how social class matters less than character.
Correct: she realizes that ones social class matters less than ones</p>
<p>Free from British rule after the American Revolution, many representatives at the Constitutional Convention felt wary toward a strong central government
Correct: many of the representatives attending the Constitutional Convention were waryof a strong central government.</p>
<p>The fruit fly is often used to study genetic mechanisms, since it reproduces rapidly, scientists can observe the effects of experiments on several generations.
Correct: mechanisms; because it reproduces rapidly,
since when does because go with a semicolon?</p>