Question

Orbiting Bodies' Properties Quick Check
4 of 44 of 4 Items


Question
Which percent of Earth’s atmosphere does carbon dioxide gas make up?(1 point)
Responses

more than 99 percent
more than 99 percent

about 21 percent
about 21 percent

less than 1 percent
less than 1 percent

about 78 percent

Answer 1

less than 1 percent