Air pollution is the effect caused by concentrations of solids...

Air pollution is the effect caused by concentrations of solids, liquids or gases in the air that have a negative impact on the surrounding environment and people. There are many such pollutants, and they may occur naturally (from dust, wildfires and volcanoes) or from human activity, be visible or invisible, emit an odour or be odourless. Leia o texto com atenção e descaque as palavras cognatas e escreva abaixo: