Photosynthesis Is Not A Factor That Can Affect The Growth Of Fish

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From the information given, we can clearly say that the growth of algae has impacted the death of the fish living in the lake. Algae, a primary producer, is a certain type of bacteria that survives in the upper layers of water which gets food and energy through photosynthesis during daytime and respiration during the night. Fish are an aquatic animal that need oxygen in order to live. Looking at the graph, we could tell that as the sky gets dark outside, the oxygen levels in the water start lowering. The fish are fine during the daytime since the algae produce their food and energy through photosynthesis. Photosynthesis is the process of converting light energy to chemical energy that can be used to fuel the organism’s activities. Photosynthesis is when the organism takes in carbon dioxide and releases oxygen.
When the sun goes down, the algae start to respire. Respiration is when the organism takes in oxygen and then releases carbon dioxide to create energy. …show more content…

This human activity is adding nutrients to the water system, which then goes to the lake. These nutrients are then consumed by the algae, which speeds up the growth of them and decrease the amount of dissolved oxygen in the water. More algae means too little dissolved oxygen for the fish. Too little dissolved oxygen means that many of the fish will die off. Since it was on the south shore of the lake, where there are human residents, that was affected, it points towards mostly the human activities. Human activities are the big reason behind the decrease because if they had not thrown away excess fertilizers and detergents, the algae would not have overgrown, taken most of the dissolved oxygen gas, and make it harder for fish to survive. Other factors would be that the respiration of the algae during the nighttime and the warm waters that provided less dissolved oxygen had killed off the

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