After watching the following video on oceans, and glaciers discuss the issues and provide some suggestions for change. You only need to watch only one ocean-related video and the one video related to glaciers, or you can watch them all.

After watching the following video on oceans, and glaciers discuss the issues and provide some suggestions for change. You only need to watch only one ocean-related video and the one video related to glaciers, or you can watch them all.