Nitrogen Cycle: Order the sequence in Eutrophication, which leads to Dead Zones. 1
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2
Too much algae blocks the sun and much of it dies.
Dead algae is broken down by bacteria, which consumes much of the oxygen in that body of water.
3
Too much Nitrogen is used on a field to fertilize the crops.
Rain water takes excess nitrogen to river systems.
Nitrogen causes "bloom" of algae in the ocean
4
Rivers transport nitrogen to the oceans
5
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6
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answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.