Question Info

This question is public and is used in 98 tests or worksheets.

Type: Multiple-Choice
Category: Environmental Science
Level: Grade 7
Author: coach112
Last Modified: 6 years ago

View all questions by coach112.

Environmental Science Question

View this question.

Add this question to a group or test by clicking the appropriate button below.

Grade 7 Environmental Science

Smog is caused by combining which of the following two gases?
  1. smoke and oxygen
  2. smoke and hydrogen
  3. smoke and fog