Gulf of Mexico’s ‘dead zone’ may be the biggest on record

Gulf of Mexico’s ‘dead zone’ may be the biggest on record

Assessment

Interactive Video

Science, Geography, Biology

11th Grade - University

Hard

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The transcript discusses the formation and impact of dead zones, also known as hypoxic zones, in ocean waters. These areas have low oxygen levels, harmful to marine life, and are exacerbated by nutrient runoff from fertilizers. The National Oceanic and Atmospheric Administration (NOAA) predicts a significant increase in dead zones due to record rainfall in the American Midwest. Marine animals like shrimp and fish tend to avoid these zones when oxygen levels fall below 2 parts per million.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the predicted size of the dead zone in the American Midwest this year?

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