Completar frases Water pollution and acid rainVersión en línea Water por Susana López 1 Soils added materials atmosphere Harmful water fertilizers POLLUTION Plants directly RAIN clouds water ACID Building health absorbed Fish inddirectly rainfall WATER occurs when large amounts of are to a body of . This can happen in two ways : - substances are released into the water . - Water can be polluted . For example , when it rains , used in fields may be carried into a stream . contains harmful chemicals such as sulphur and nitrogen . These chemicals are released into the as gases . They undergo a chemical transformation and are by the water in . They become part of and enter the cycle . Acid rain can have adverse effects on : - and forests - - Human - , other aquatic animals and insects -