Between 400,000 years ago until 1950, the levels of carbon dioxide in the atmosphere never exceeded

Question

parts per million. Today, carbon dioxide levels have exceeded
parts per million.

Answer 1

Between 400,000 years ago until 1950, the levels of carbon dioxide in the atmosphere never exceeded 300 parts per million. Today, carbon dioxide levels have exceeded 400 parts per million.

Answer 2

there is no 400

Answer 3

I apologize for the error. Between 400,000 years ago until around 1950, the levels of carbon dioxide in the atmosphere never exceeded approximately 300 parts per million. In recent times, especially in the 2020s, atmospheric CO2 levels have surpassed 400 parts per million. If you need further information or specifics, feel free to ask!

Answer 4

300
410
500
550

Answer 5

Based on the information you've provided, here's how it would fit together:

• Between 400,000 years ago until 1950, the levels of carbon dioxide in the atmosphere never exceeded 300 parts per million.
• Today, carbon dioxide levels have exceeded 410 parts per million, with recent measurements sometimes reported around 500 parts per million or higher in certain data points.

Would you like more information on the implications of these changes in carbon dioxide levels?