Carbon Dioxide in the Atmosphere

Question

Carbon dioxide in the atmosphere
A) Can be explained mainly by human additions from industrial activity
B) Has increased only in the past decade
C) Has declined since new regulations have taken effect
D) Has increased over the past 150 years in the atmosphere

Accepted Answer

Carbon dioxide levels have increased over the past 150 years due to human activities such as burning fossil fuels and deforestation, not just in the past decade.