The table below shows carbon dioxide emissions and world population data for several years between 1800 and 2004.

Year World Population
(billions) Carbon Dioxide Emissions
(metric tons carbon per year)
1800 1 100
1850 1.3 175
1900 1.7 500
1950 2.5 1800
2004 6 8000

Based on the table above, how has population growth in the recent past most likely impacted the composition of the Earth's atmosphere?
A.
The Earth's atmosphere did not contain any carbon dioxide in 1800, but it was the most common atmospheric gas in 2004.
B.
The Earth's atmosphere contained a higher level of carbon dioxide in 2004 than it did in 1800.
C.
The composition of the Earth's atmosphere did not change between 1800 and 2004.
D.
The Earth's atmosphere contained a higher level of carbon dioxide in 1800 than it did in 2004.