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First reading:
1. Present a finding
2. Scientist surprised with above finding
3. Point out the reason behind the phenomenon
Second reading:
1. The long- term observation finds out cooling ocean temperature will lead to red tide and phytoplankton blooms.
2. It's surprising result. Normally phytoplankton results from ocean water pollution, which from plant sewage and agricultural waste. But in this case, it happened during the period of decreasing nutrient concentration and inputs.
The theory behind above phenomenon: colder water—— types & abundance & migration patterns change——predators increasing —— ocean filter die as prey——phytoplankton increasing |
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