What is the relationship between CO2 levels and temperature?

What can you infer from this? (make a guess or assumption based on the data)

Approximately what year did the concentration of CO2 first exceed 300 ppm?

What is the relationship between CO2 levels and temperature What can you infer from this make a guess or assumption based on the data Approximately what year di class=
What is the relationship between CO2 levels and temperature What can you infer from this make a guess or assumption based on the data Approximately what year di class=