Which one of the following statements best describes how the present-day concentration of CO2 in the atmosphere compares to the past - before fossil-fuel burning began with the Industrial Revolution (~1880)? Today's CO2 concentration is fairly similar to that since humans evolved a 300 thousand years ago. Today's CO2 concentration is lower than that of the past few 100 thousand years. Today's CO2 concentration is similar to that of ~3+ million years ago. Today's CO2 concentration has started to decline ever since many industrial countries have initiated efforts to be more 'green'. We don't know because it is not possible to reconstruct how atmospheric CO2 has varied in the past.
Which one of the following statements best describes how the present-day concentration of CO2 in the atmosphere compares to the past - before fossil-fuel burning began with the Industrial Revolution (~1880)? Today's CO2 concentration is fairly similar to that since humans evolved a 300 thousand years ago. Today's CO2 concentration is lower than that of the past few 100 thousand years. Today's CO2 concentration is similar to that of ~3+ million years ago. Today's CO2 concentration has started to decline ever since many industrial countries have initiated efforts to be more 'green'. We don't know because it is not possible to reconstruct how atmospheric CO2 has varied in the past.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Transcribed Image Text:Which one of the following statements best describes how the
present-day concentration of CO2 in the atmosphere compares to
the past - before fossil-fuel burning began with the Industrial
Revolution (~1880)?
Today's CO2 concentration is fairly similar to that since humans evolved
a 300 thousand years ago.
Today's CO2 concentration is lower than that of the past few 100
thousand years.
Today's CO2 concentration is similar to that of ~3+ million years ago.
Today's CO2 concentration has started to decline ever since many
industrial countries have initiated efforts to be more 'green'.
We don't know because it is not possible to reconstruct how
atmospheric CO2 has varied in the past.
Expert Solution
Step 1
We need to write down the comparison between the CO2 levels in the past and after industrial revolution.
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