CO₂ Makes Up About ________ Percent of the Atmosphere

Question

CO2makes up about ________ percent of the atmosphere.
A) 0.035
B) 0.35
C) 3.5
D) 35
E) 37

Accepted Answer

CO₂, also known as carbonyl sulfide, makes up about 0.035 percent of the atmosphere.

CO2 makes up about ________ percent of the atmosphere.