Quiz 1

The Keeling Curve documents changes in carbon dioxide levels in the atmosphere, as recorded since 1958 at the Mauna Loa observatory in Hawaii.

1. Explain the pattern seen in the graph of a single-year's changes in carbon dioxide levels. You should both explain what the pattern is and the most likely explanation for why that pattern should exist.
2. What is the overall trend seen in the data from 1958 - 2015?
3. What are some potential explanations for the trend observed between 1958 - 2015?