A compound ion produced when sulphuric acid releases protons.
Sulphur dioxide emission is the main cause of acid rains. It is an intermediate product in the production of sulphuric acid.
One of the oxides of sulphur, forms sulphuric acid with water.
A colourless, viscous liquid, a highly corrosive, strong acid used in several industrial processes.
This animation demonstrates the use of modern technology in agriculture.
This animation demonstrates the main sources of soil pollution.
The main sources of water pollution are industry, agriculture and urban areas.