Question

use the text to compare and contrast fog and smog.
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.

Explanation:

• For "Forms from moist air": The text states that fog forms when moist air cools into tiny water droplets. So, fog (\(Fog\)) should be checked for this characteristic.
• For "Is made by humans": The text clearly says smog is created by human actions (cars and coal power plants releasing nitrogen oxide which combines with sunlight). So, smog (\(Smog\)) should be checked for this.
• For "Is harmful": The text mentions that fog itself isn't generally harmful (though it can cause dangerous driving conditions due to limited visibility), while smog can be dangerous (hurt eyes, make breathing difficult, cause other health problems). So, smog (\(Smog\)) should be checked for being harmful.

Answer:

	Fog	Smog
Is made by humans	\( \square \) not checked	\( \square \) checked
Is harmful	\( \square \) not checked	\( \square \) checked