Think back to your knowledge of the carbon cycle. Some human activities increase the levels of CO2 in the atmosphere. In which year does CO2 concentration seem to make a pivotal turn? What are some human activities that could have influenced CO2 levels in this period?

THIS IS SCIENCE NOT BIOLOGY

Answer

The years the industrial revolution started

Explanation:

I feel like there is supposed to be a image or graph that is referenced to answer this question. However, carbon emissions started rising during the industrial revolution as people began to use more coal in inefficient ways.

The CO2 concentration has been steadily increasing since 1880, but it took a sharp turn in 1940. The burning of fossil fuels for energy and the increase in demand for energy (cars, factories, manufacturing) could have contributed to the change.

Explanation:

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