Increasing greenhouse gases and harmful gases to human health has become more intense due to the increasing consumption of fossil fuel. The strict regulations on exhaust emissions from motor vehicles have encouraged researchers to improve combustion quality. Using water additive is one of the interesting ways that could reduce the emissions of diesel engine. especially nitrogen oxides... https://ncoldbmdfrwj2g.nizarblog.com/35079575/environmental-effect-of-conventional-and-gm-crops-of-cotton-gossipium-hirsitum-l-and-corn-zea-mays-l