Information
A graph shows that carbon dioxide emissions in 1985 were about 19 kilotons and consistently increased. The data ends in 2013 at about 36 kilotons.
Question
Students learn that carbon dioxide is a greenhouse gas that contributes to climate change. They want to identify the sources of carbon dioxide emissions in order to make a plan to reduce their town's impact on climate change.
Which ,begin emphasis,two,end emphasis, processes contributed ,begin emphasis,most,end emphasis, to the changes in carbon dioxide concentrations since 1985?
Answer options with 5 options
A.
respiration of a growing population
B.
transportation of goods and people
C.
manufacturing of materials like cement
D.
development of renewable energy sources
E.
expansion of public transportation services
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The two processes that contributed most to the changes in carbon dioxide concentrations since 1985 are:
B. transportation of goods and people
C. manufacturing of materials like cement
These activities typically lead to significant CO2 emissions due to fossil fuel combustion and industrial processes, which is likely why they are major contributors to the increase in CO2 concentrations over time.
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