Question

the graph below shows atmospheric carbon dioxide levels since the year 1880. atmospheric concentration of carbon dioxide (co₂) since 1880. ppm = parts per million. which of the following is an observation that can be made from the graph? atmospheric carbon dioxide levels have increased during the last century. atmospheric carbon dioxide levels are responsible for global temperature change. atmospheric carbon dioxide levels are rising at the same rate for the past century. atmospheric carbon dioxide levels have remained the same over the past century.

Explanation:

By observing the graph, the atmospheric carbon - dioxide levels (in ppm) have a clear upward trend from 1880 to 2000. This shows an increase over the last century. The graph only shows the level of carbon - dioxide and not its relation to global temperature change. Also, the slope of the graph changes, indicating non - constant rising rates.

Answer:

Atmospheric carbon dioxide levels have increased during the last century.