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These graphs show a change in four types of greenhouse gases from 1975 to 2015. Based on the results of your experiment, how might these changes in greenhouse gases affect Earth’s temperatures? Which is the only greenhouse gas to show a downward trend in its concentration?

These graphs show a change in four types of greenhouse gases from 1975 to 2015. Based-example-1

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the red gas this has has been decreasing today it also has been decreasing since 1990
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