The diagram illustrates the process of pollutants that from modern life become acidic rain, which in turn pollutes the food chain and the environment.
In overall, it is a cyclic process. However, there are steps while it starts with formation of gasses through different human activities and ends with acidic water entering the food chain.
Getting back to the details, first of all, different harmful gasses like (carbon dioxide, sulphur dioxide, nitrogen oxides, mercury, and other components) are produced by housing activity, transportation, factories, and power stations, which rise to clouds. And clouds absorb that pollution. After that, the polluted cloud crosses nations to nations.And landends with pollution. Likewise, the landend clouds with pollution start acid rain fall on hills and fields.
In addition, acidic rain falls on trees and plants also. Moreover, the water mixed with rivers and lakes. Lastly, the pollutants enter the food chain and the process completes here.