Question

In this 800,000-year climate record from Antarctica, we see that carbon dioxide concentrations have consistently ranged between ____________ parts per million while the climate system oscillated back and forth between glacial and interglacial periods.

Answer 1

80 - 280 ppm

Step-by-step explanation:

• The difference between the glacial and interglacial periods reached about 80 ppm for carbon dioxide and 300 ppb for methane. The cause of this is the oceans and slow geologic process and the accumulation of freshwater in ice sheets.