I was inclined to dismiss the claims of CO2 on crops. This kind of language sounds to me as kids spouting agendas they don’t even really understand… People too easily scream “climate change” every time there is a severe storm.
That said, I found CO2 levels seem to have changed by 25-30% from 1960. And a small multiples of the current concentration, humans tend to feel effects.
Commercial hydroponic greenhouses frequently add CO2 to the grow room to increase yield: https://dutchgreenhouses.com/en/climate/co2-enrichment If high CO2 levels reduce the mineral content of vegetables, then everything coming out of the Netherlands has been the nutritional equivalent of wax fruit for quite some time now.
Somewhat awkwardly, the CO2 produced by the Climeworks DAC plant was initially sold to such a greenhouse, which was used to boost plant growth and then immediately exhausted to the atmosphere. https://en.wikipedia.org/wiki/Climeworks#Projects Carbon captured... but not quite sequestered.
That said, I found CO2 levels seem to have changed by 25-30% from 1960. And a small multiples of the current concentration, humans tend to feel effects.
https://www.statista.com/statistics/1091926/atmospheric-conc...
Maybe there is something to this?