Environmental Science Concepts and Applications

What are the three primary goals of environmental engineering?

• Protecting people from the environment, protecting the environment from people, and improving overall quality.

• Designing new technologies, managing waste, and conserving natural resources.

• Developing sustainable energy sources, reducing pollution, and promoting public health.

• Studying ecosystems, analyzing climate change, and implementing conservation strategies.

What were some of the severe health consequences observed in Flint, Michigan, due to lead-contaminated drinking water?

• Increased rates of cancer and respiratory illnesses.

• Cardiovascular problems, neurological issues, and an outbreak of Legionnaires' disease.

• Digestive disorders and skin rashes.

• Vision impairment and hearing loss.

What is the approximate minimum dissolved oxygen content (in parts per million) generally required to support an underwater population?

• 1-2 ppm

• 4-5 ppm

• 7-8 ppm

• 9-10 ppm

What pH range is generally considered supportive of life in aquatic environments?

• 0-3

• 4-5

• 6-8

• 9-10

What are common symptoms of carbon monoxide poisoning?

• Fever, cough, and sore throat

• Dizziness, weakness, and vomiting

• Skin rash, joint pain, and fatigue

• Headache, blurred vision, and muscle cramps

Why are smaller airborne pollutants generally more difficult to filter out of the air?

• They are heavier and fall out of the air quickly.

• They can easily slip through the pores of most filters.

• They are attracted to larger particles, making them harder to isolate.

• They react chemically with filter materials, degrading them.

How does an electrostatic air filter primarily remove pollutants from the air?

• It uses water to wash pollutants out of the air.

• It physically blocks all particles with a dense mesh.

• It charges air molecules, causing pollutants to stick to charged plates.

• It uses chemical reactions to neutralize harmful substances.

Beyond reducing pollution, what are two additional benefits of recycling?

• It increases landfill space and creates new jobs.

• It conserves natural resources and saves energy.

• It purifies water and reduces noise levels.

• It generates electricity and improves air quality.