By analyzing old air trapped in glacial ice up to 800,000 years old, what have we discovered? (Choose ALL correct answers.) Atmospheric CO2 level and global average temperature stayed constant before humans came along. Atmospheric CO2 levels fluctuated naturally between 180 and 280 parts per million. Global average temperature fluctuated in synch with atmospheric CO2 levels. Atmospheric CO2 level and global average temperature both fluctuated, but not in synch with each other.

Ice cores are used as a proxy for paleoclimate interpretation, and for this, ice sheets are drilled…

Answered: By analyzing old air trapped in glacial…

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

Related questions

Question

By analyzing old air trapped in glacial ice up to 800,000 years old, what have we discovered? (Choose ALL correct answers.)

		Atmospheric CO₂ level and global average temperature stayed constant before humans came along.
		Atmospheric CO₂ levels fluctuated naturally between 180 and 280 parts per million.
		Global average temperature fluctuated in synch with atmospheric CO₂ levels.
		Atmospheric CO₂ level and global average temperature both fluctuated, but not in synch with each other.