>>2720477>The part where the law of the minimum means that carbon dioxide does fuck all for plant growthIf the limiting factor is water, higher levels of CO2 will make the plant lose less water to transpiration.
This is a fact. Deserts have been getting greener and you cannot attribute that to fertilizers or agriculture. And last I checked, the Sahara is a jaunt away from China and India.
I also don't think your green wall hypothesis is up to much.
I'll reiterate.
The Sahara is greening even in places where rainfall has decreased.