every year, human waste into the environment moment 700 million tons of dust, 20 billion tons of carbon dioxide, 1.53 million tons of SiO2, 6 thousand tons of poison gas, ...
annually, humans release into the environment of 700 million tons of dust compartments, 20 billion tons of carbon dioxide, SiO2 1.53 million tonnes, more than 6 thousand tons of toxic gases, ...