Question

Over the last billion years, CO2 levels O continuously decreased, until reaching a low around 1850. O generally decreased, except at the end of the Carboniferous period, and reached a minimum during glacial advances in the last million years. O were initially low, peaked during the Carboniferous Period, and decreased until 1850 O none of the other answers is correct

          Over the last billion years, CO2 levels
O continuously decreased, until reaching a low around 1850.
O generally decreased, except at the end of the Carboniferous period, and reached a minimum during glacial advances in the last million
years.
O were initially low, peaked during the Carboniferous Period, and decreased until 1850
O none of the other answers is correct

Over the last billion years, CO2 levels
O continuously decreased, until reaching a low around 1850.
O generally decreased, except at the end of the Carboniferous period, and reached a minimum during glacial advances in the last million
years.
O were initially low, peaked during the Carboniferous Period, and decreased until 1850
O none of the other answers is correct

Added by Brenda J.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Madhur L

08/30/2023

Step 1

Step 1: CO2 levels generally decreased over the last billion years, but increased during the Carboniferous period. Show more…

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Over the last billion years, CO2 levels Ocontinuously decreased, until reaching a low around 1850. O generally decreased, except at the end of the Carboniferous period, and reached a minimum during glacial advances in the last million years. Owere initially low, peaked during the Carboniferous Period, and decreased until 1850 O none of the other answers is correct