Question

What association can be made between atmospheric concentrations of carbon dioxide and global climate based on data from the past?

Select all that apply.



Responses

Global temperatures were warmer during periods of higher atmospheric carbon dioxide.
Global temperatures were warmer during periods of higher atmospheric carbon dioxide.

Low concentrations of atmospheric carbon dioxide were associated with cold temperatures.
Low concentrations of atmospheric carbon dioxide were associated with cold temperatures.

High concentrations of atmospheric carbon dioxide were associated with cold temperatures.
High concentrations of atmospheric carbon dioxide were associated with cold temperatures.

There is no association between atmospheric concentrations of carbon dioxide and global climate.

Answer 1

Global temperatures were warmer during periods of higher atmospheric carbon dioxide.
Low concentrations of atmospheric carbon dioxide were associated with cold temperatures.