What is the predicted size of the dead zone in the American Midwest this year?
Gulf of Mexico’s ‘dead zone’ may be the biggest on record

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Science, Geography, Biology
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11th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5000 square miles
12000 square miles
8000 square miles
10000 square miles
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which organization predicts the size of the dead zone?
NASA
EPA
NOAA
USGS
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What causes the formation of dead zones in ocean waters?
Plastic pollution
Nutrient runoff from fertilizers
Oil spills
Overfishing
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which nutrients are primarily responsible for the growth of algae in ocean waters?
Magnesium and sulfur
Nitrogen and phosphorus
Calcium and potassium
Iron and zinc
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At what oxygen level do marine animals like shrimp and fish start to leave hypoxic zones?
2 parts per million
5 parts per million
4 parts per million
3 parts per million
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