More carbon dioxide makes plants more efficient
Since the beginning of the last century, photosynthesis on a global scale has increased in nearly constant proportion to the rise in atmospheric carbon dioxide. Both are now around 30% higher than in the 19th century, before industrialisation began to generate significant emissions.
Carbon dioxide fertilisation is responsible for at least 80% of this increase in photosynthesis. Most of the rest is attributed to a longer growing season in the rapidly warming boreal forest and Arctic.
Maybe this: (https://theconversation.com/yes-more-carbon-dioxide-in-the-atmosphere-helps-plants-grow-but-its-no-excuse-to-downplay-climate-change-130603#:~:text=Carbon%20dioxide%20fertilisation%20is%20responsible,of%20this%20increase%20in%20photosynthesis.&text=Higher%20concentrations%20of%20carbon%20dioxide,of%20carbon%20dioxide%20and%20water.)