smog what is it

1. What caused the panic among residents of Los Angeles on July 26, 1943?
a. A volcanic eruption
b. Chemical warfare attack
c. A severe thunderstorm
d. A thick layer of smog

• a. A volcanic eruption

• b. Chemical warfare attack

• c. A severe thunderstorm

• d. A thick layer of smog

2. Which two compounds did Arie Haagen-Smit identify as the main contributors to the smog in Los Angeles?

• a. Carbon dioxide and sulfur dioxide

• b. Volatile organic compounds (VOCs) and nitrogen oxides

• c. Methane and ozone

• d. Particulate matter and carbon monoxide

3. What effect does temperature inversion have on smog?

• a. It helps disperse air pollution.

• b. It traps pollution-filled air near the Earth's surface.

• c. It increases humidity levels in cities.

• d. It prevents the formation of secondary pollutants.