WVGSA Grade 8 Science Practice Questions - West Virginia General Summative Assessment Grade 8 Science Exam

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Ice core data from Antarctica shows a strong historical correlation over 800,000 years: whenever atmospheric CO2 levels rose, global average surface temperatures also rose. What conclusion does this long-term paleoclimate data support?

Atmospheric CO2 concentration and global surface temperature are strongly coupled components of Earth's climate system Increased CO2 causes global cooling and ice sheet expansion Temperature changes are completely independent of greenhouse gas concentrations Antarctic ice cores record local ocean tides rather than atmospheric history

Correct Answer:

Atmospheric CO2 concentration and global surface temperature are strongly coupled components of Earth's climate system

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