Question

use the text to compare and contrast smog and fog.
fog and smog may look similar in the sky, but they are not the same thing. smog is a type of air pollution. it forms when nitrogen oxide, a gas released by cars and coal power plants, combines with sunlight. on the other hand, fog is a type of low - lying cloud that forms when moist air cools and turns into tiny water droplets. thus, fog occurs naturally, as opposed to smog, which is created by human actions. fog itself isnt generally harmful, though it can cause dangerous driving conditions by limiting visibility. smog, however, can be dangerous; it can hurt the eyes, make breathing difficult, and cause other health problems.

	smog	fog
is made by humans
is harmful

Explanation:

• For "Forms from moist air": The text says "fog is a type of low - lying cloud that forms when moist air cools and turns into tiny water droplets", so fog forms from moist air.
• For "Is made by humans": The text states "smog is a type of air pollution... created by human actions", so smog is made by humans.
• For "Is harmful": The text mentions "fog itself isn't generally harmful... smog... can be dangerous", so smog is harmful.

Answer:

• Forms from moist air: Fog.
• Is made by humans: Smog.
• Is harmful: Smog.