The study of ______ shows that there is significantly more carbon dioxide in the earth's atmosphere than at any time in the last 800,000 years.
A)ice core data
B)earth's electromagnetic field
C)aurora borealis analyses
D)coral reefs
E)ocean temperatures

Question

Quizplus · Accepted Answer

Ice core data allow scientists to analyze atmospheric gas concentrations from the past, revealing the increase in carbon dioxide levels over time.

The Study of ______ Shows That There Is Significantly More