What are the three main goals of environmental engineering?

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

• Designing new technologies, building sustainable infrastructure, and managing waste.

• Studying climate change, developing renewable energy, and conserving natural resources.

• Analyzing chemical reactions, understanding biological processes, and applying engineering principles.

What were some of the negative health effects experienced by the residents of Flint, Michigan, due to lead contamination in their drinking water?

• Increased aggression and difficulty thinking.

• Improved cardiovascular health and stronger bones.

• Enhanced immune system and better digestion.

• Higher fertility rates and reduced fetal death rates.

What is the minimum level of dissolved oxygen (in parts per million) generally needed to support an underwater population?

• 1-2 ppm

• 4-5 ppm

• 7-8 ppm

• 9-10 ppm

What pH range generally supports life in water?

• 0 to 3

• 4 to 5

• 6 to 8

• 9 to 10

What is a common symptom of carbon monoxide poisoning?

• Increased energy

• Clear vision

• Dizziness

• Heightened sense of smell

Which weather condition would cause airborne pollutants to travel the farthest?

• Light breeze

• High wind speeds

• No wind

• Heavy fog

How do electrostatic air filters remove pollutants from the air?

• They use water to wash away particles.

• They physically block all particles with tiny pores.

• They charge particles, causing them to stick to collector plates.

• They burn the pollutants at high temperatures.

Besides reducing pollution, what is another benefit of recycling?

• It increases the amount of waste in landfills.

• It uses more fossil fuels.

• It conserves natural resources.

• It makes products more expensive.