What does AI Gore, author of An Inconvenient Truth, demonstrate about the level of atmospheric carbon dioxide levels?

Question

( 1 point )

A.) Each year, the CO2 level rises and then falls. Over the past 50 years, it has steadily increased.
B.) Each year, the CO2 level increases at a faster rate. Over the past 50 years, it has nearly doubled.
C.) Each year, the CO2 level decreases. Over the past 50 years, it has steadily decreased.

Answer 1

B.) Each year, the CO2 level increases at a faster rate. Over the past 50 years, it has nearly doubled.