What method of measuring atmospheric CO₂ levels gives data related to what past atmosphere CO₂ levels were?

Question

Quizplus · Accepted Answer

Measurements taken from gas bubbles trapped in the ice can provide data on past atmospheric CO₂ levels, as the gas bubbles become trapped within the ice and provide a snapshot of the composition of the atmosphere at the time the ice formed. Local air measurement and water sampling would provide current atmospheric CO₂ levels, but not information on past levels. Temperature correlation may provide some information on past atmospheric CO₂ levels, but it would not be as accurate or direct as measurements taken from gas bubbles trapped in the ice. Therefore, the best choice is option C.

What Method of Measuring Atmospheric CO2 Levels Gives Data Related

What Method of Measuring Atmospheric CO₂ Levels Gives Data Related