petertester7up
21.11.2019 •
Biology
Thousands of farms are located along the mississippi river and its tributaries through the central u.s. as water washes into the river after a heavy rain, it brings with it nutrients from fertilizers added to farmland. these materials flow downriver and eventually enter the gulf of mexico, where they create conditions for a dead zone — a region of the ecosystem that can’t support any living creatures. this is an example of a tragedy of the commons. why is the dead zone seasonal?
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Ответ:
b. 250 mL Beaker
Explanation: