NOx elimination and CO2 concentration change Since seven developed countries started NOx elimination at around 1980,CO2 concentration increased to give global warming. NOx is main fertilizer.NO2 is main fertilyzer for CO2 asymilation for all biology on earth. China do not do NOx elimination .DGP ratio of China 2018/1980 is 31. GDP ratio of Japan 2018/1980 is 1. NOx accelerate CO2 assimilation giving many fish and grain. Japan stopped NOx elimination at September 2025. Then CO2 assimilation is accelerated to give much sardin at Choshi,Japan and many sardines are produced to sink fishing boat at Choshi Chiba,Japan.USA stopped NOx elimination at December 2025. NOx promoted CO2 assimilation and plankton production and fish production. CO2 concentration decreased and global warming stopped.