There has never been a point in the Earth's history where carbon dioxide levels have been this high. The effects from this are truely devastating to Earth.
Carbon Dioxide Center for Science Education
Visualizing Changes in CO₂ Emissions Since 1900
Answer Key
Carbon dioxide now more than 50% higher than pre-industrial levels
Carbon dioxide in Earth's atmosphere - Wikipedia
Lab 3: Carbon in the Atmosphere
Here's how to explain climate change to Donald Trump and all the other idiots - Fleet Street Fox - Mirror Online
Graphic: The relentless rise of carbon dioxide
Carbon dioxide emissions reached a record high in 2022
Carbon In The Atmosphere Is Found In The Form Of