Question

which of the following is the best conclusion that can be made from this graph? atmospheric carbon dioxide measured at mauna. a: hawaii has a lot of carbon dioxide. b: atmospheric carbon dioxide levels have increased steadily since 1960. c: humans have been working hard to decrease carbon dioxide levels. d: atmospheric carbon dioxide levels have been decreasing since 1960.

Explanation:

The graph shows the trend of atmospheric carbon - dioxide measured at Mauna Loa from 1960 to 2010. The line graph is steadily rising, indicating an increase in carbon - dioxide levels over time.

Answer:

B. Atmospheric carbon dioxide levels have increased steadily since 1960.