How is water quality an  ecological issue?

Which of the following statements is true about the treaty of versailles ?

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

How does an appellate court differ from a trial court a. an appellate court usually has a jury b. an appellate court decides issues of facts c. an appellate court examines more witnesses d. an appellate court reviews another courts decision