<p>Oil spills have major environmental and economic effects.</p> The methodology, results, discussion, and conclusions for each study were reviewed and summarized. Recently, attention to oil spills and their potential effects increased due to the…

<p>What year did the U.S.A. stop using 100% silver in its coins.</p> In 195, the United States government stopped making silver from dimes, quarters and reduced the amount of silver in half dollars. I checked out all the coins in my old coin albu…