Question:
8 How has the concentration of greenhouse gasses changed
Last updated: 5/5/2023
![8 How has the concentration of greenhouse gasses changed](https://media.kunduz.com/media/sug-question-candidate/20220506235255098407-4453357_5sNRgtH.jpg?h=512)
8 How has the concentration of greenhouse gasses changed from the ice ages to the 1750 s How much has the average temperature risen as a result of these additional greenhouse gasses