Hey Mr. Wood. This is Elaine from period 4. I chose question 3 and sea level as a topic. My answer is : What we can do to keep sea level from rising by keeping glaziers frozen. We can keep glaciers frozen by not having ozone holes. Ozone holes are caused by CFC's so we can stop using them to keep the sea level from rising. If we can't prevent it, then in a hundred years the lands would be flooded.