Question

Special Properties Quick Check 1 of 31 of 3 Items Question Which percent of Earth’s atmosphere does carbon dioxide gas make up?(1 point) Responses about 21 percent about 21 percent about 78 percent about 78 percent less than 1 percent less than 1 percent more than 99 percent more than 99 percent Skip to navigation

Answer 1

Carbon dioxide gas makes up less than 1 percent of Earth's atmosphere. Therefore, the correct response is: **less than 1 percent**.