US Environmental Issues Quiz
Pollution, conservation, water stress, climate impacts (10 questions).
US Environmental Issues Quiz: Quick Study Notes
Test your knowledge on the pressing environmental challenges facing the United States, from the depletion of the Colorado River to the history of conservation and the fight against pollution.
The Colorado River supplies 40 million people but reservoirs like Lake Mead are at historic lows.
Over 1,300 toxic waste sites are on the EPA’s National Priorities List for cleanup.
Climate change has caused the Western wildfire season to lengthen by nearly three months since the 1970s.
Despite growth, aggregate emissions of common pollutants dropped 78% between 1970 and 2020.
Key Takeaways
- The Colorado River is the lifeline of the American Southwest but faces severe depletion.
- The 1970s saw major legislative wins like the Clean Air Act and Clean Water Act.
- Invasive species like Zebra Mussels cost the U.S. economy billions annually.
- Groundwater depletion in the Ogallala Aquifer threatens Midwest agriculture.
- Wildfires in the West are becoming larger and more frequent due to aridity.
- Lead contamination remains a concern in aging water infrastructure (e.g., Flint).
Frequently Asked Questions
What is the biggest environmental threat to the US?
Most experts cite climate change as the primary threat, driving extreme weather, heatwaves, and rising sea levels.
What is the Superfund program?
The Superfund (CERCLA) is an EPA program designed to investigate and clean up sites contaminated with hazardous substances.
Why is the Colorado River drying up?
A combination of chronic overuse by states and a “megadrought” fueled by climate change has depleted its flow.
What caused the Dust Bowl?
Severe drought combined with poor soil conservation and farming practices in the 1930s caused massive dust storms.
How does the US manage air pollution?
The EPA regulates emissions from factories and vehicles under the Clean Air Act, setting national air quality standards.
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