The ocean is made up of two zones; which are the photic zone and the aphotic zone. Photic zone has something to do with light, and it is defined as the depth to which 1 percent of surface light intensity is present. Photic zone is very important for life on earth even if it represents a very small portion of ocean. While more than 90 percent of the deep ocean or the part that the light cannot reach is called aphotic zone, or the area below 200 meters
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