🌰 Practice ES 15.2.1

What is the estimated number of premature deaths caused by air pollution worldwide every year?

• 1 million

• 2 million

• 3 million

• 4 million

What are natural sources of air pollution?

• Windblown dust, particles in volcanic eruptions, smoke and soot from fire

• Emissions from cars and factories

• Chemical waste from industries

• Plastic waste in oceans

What is a major human source of air pollution?

• Photosynthesis

• Burning of fossil fuels

• Ocean currents

• Natural gas emissions from trees

How can humans increase the hazards of natural air pollution?

• By planting more trees

• By removing trees and exposing soil

• By reducing fossil fuel usage

• By conserving water

Which of the following is an example of a secondary air pollutant?

• Soot

• Sulfuric acid

• Carbon monoxide

• Nitrogen

What does carbon monoxide interfere with in the human body?

• Blood sugar levels

• Oxygen usage

• Heart rate

• Digestion

What type of image is shown in the document?

• MRI scan

• Ultrasound

• X-ray

• CT scan

Which of the following is a respiratory illness mentioned in the document?

• Asthma

• Diabetes

• Hypertension

• Arthritis

Where does industrial smog primarily come from?

• Natural sources

• Industrial sources

• Agricultural sources

• Residential sources

What is photochemical smog mostly composed of?

• Stratospheric ozone

• Tropospheric ozone

• Mesospheric ozone

• Exospheric ozone