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An ecologist found that the DO in a lake was highest in February and lowest in July. What is the most likely reason that this occurred?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
In the United States, which is responsible for ensuring the safety of the country’s drinking water?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
If a body of water has very high pH, what can most likely be concluded?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
What is the most likely reason that upwelling creates productive fisheries?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
Why is water from an aquifer more likely to be cleaner than water from other sources?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
Which best describes the characteristics of a river basin?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
In the United States, which agency enforces the Clean Water Act and Safe Drinking Water Act?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
High nitrates lead to algae blooms. These algae die and rot, which reduces dissolved oxygen. What is this process called?
Eutrophication
There were higher temperatures in July and lower temperatures in February
It is unsafe to drink
Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)
because pollutants are filtered by rock and soil deep within Earth
It lowers the pH
the land drained by a river and its tributaries
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