7. What might humans do to INCREASE the amount of nitrogen entering rivers and oceans?
or rivers

Burning fossil fuels, application of nitrogen-based fertilizers, and other activities can dramatically increase the amount of biologically available nitrogen in an ecosystem. ... Much of the nitrogen applied to agricultural and urban areas ultimately enters rivers and nearshore coastal systems.

Explanation:

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supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes

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