Video: http://video.nationalgeographic.com/video/places/parks-and-nature-places/oceans/oceans-overview/
In this video put out by National Geographic, it describes the importance of the ocean for all life on earth and describes how pollution and industrial fishing has affected the ocean over the years. This video described how the ocean is a source for all life because without it the earth would be similar to the moon or mars. The ocean also absorbs the majority of the carbon dioxide in the atmosphere and produces about 70% of the oxygen that we all live off of. It drives weather and regulates temperature, and evaporating water from the ocean gets sent back down as rain and other precipitation. The ocean covers 3/4 of the earths surface and its maximum depth is 7 miles. 97% of the earths water is present in the ocean and that also means that 97% of the living space on earth is held in the ocean. The ocean is so vast that we have barely touched it with exploration, we have only explored about 5% of the ocean. The vastness of the ocean had led people to believe that there was an endless abundance of resources and food sources, many fish had been taken from the ocean in industrial fishing decreasing the diversity of those species in the ocean. Industrial pollution, global warming, human waste, and plastic debris have had huge affects on the ocean, creating many dead zones off the coasts and creating a huge garbage pile in the Pacific Ocean.
Oceans Overview. Perf. Sylvia Earle. National Geographic. National Geographic, n.d. Web. 22 Apr. 2013 http://video.nationalgeographic.com/video/places/parks-and-nature-places/oceans/oceans-overview/
This was a very interesting video that described the ocean and its many importances for life on earth. It was a really good overview of all of the things that the ocean does and all of the things that we have done that have affected it. I thought it was really intersting that the ocean produces about 70% of the earths oxygen supply, because i normally think of plants on land as producing oxygen for us. Overall, this video was a good overview of the ocean and how important marine biology is in understanding the oceans.
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