Final answer:
Increased atmospheric CO2 concentration leads to higher global temperatures with potentially serious consequences for humanity.
Explanation:
Atmospheric carbon dioxide (CO2) and temperature are interconnected. Increases in CO2 concentration over time lead to increases in temperature, resulting in global warming.
Direct evidence supports the relationship between atmospheric CO2 concentrations and temperature; as CO2 rises, global temperature rises.
The continuing anthropogenic increase in CO2 concentration in the atmosphere will likely result in a significant increase in global temperature, with serious consequences for humanity if no action is taken.
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