CO2 since 1800
Atmospheric carbon dioxide at record high levels despite reduced emissions in 2020 - Met Office
Interpret graphs - photosynthesis limiting factors - Photosynthesis - National 5 Biology Revision - BBC Bitesize
Visualizing The Growth of Atmospheric CO2 Concentration - Engaging Data
The Effect of Carbon Dioxide Levels on Photosynthesis
Daily CO2
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Factors affecting the rate of photosynthesis - Pass My Exams: Easy exam revision notes for GSCE Biology
Greenhouse gas levels surged in 2020, NOAA says
![The graph of CO2 concentration growth in the atmosphere [2] | Download Scientific Diagram](https://www.researchgate.net/publication/364340404/figure/fig1/AS:11431281092887433@1667010711481/The-graph-of-CO2-concentration-growth-in-the-atmosphere-2.png "The graph of CO2 concentration growth in the atmosphere [2] | Download Scientific Diagram")
The graph of CO2 concentration growth in the atmosphere [2] | Download Scientific Diagram
How Carbon Dioxide Concentration Affects Photosynthetic Rate
Carbon Dioxide | Vital Signs – Climate Change: Vital Signs of the Planet
CO2 Levels: Current & Historic Atmospheric Carbon Dioxide / Global Temperature Graph & Widget
Mass Extinctions and CO2 levels - John Englander - Sea Level Rise Expert
CO2 Levels: Current & Historic Atmospheric Carbon Dioxide / Global Temperature Graph & Widget
Why are CO2 levels almost a linear graph (since the 60s) while the emission rates rose about 4 times then? - Quora
Daily CO2
File:Photosynthesis - CO2 concentration graph-bs.png - Wikipedia
Climate graphic of the week: Record carbon dioxide levels alarm scientists
CSI013_fig04_CO2_concentration 2012.eps — European Environment Agency
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
