Also, when the algae decomposes, it takes away the dissolved oxygen which organisms need as well (River Water Quality and Pollution). Another way humans can pollute water is when factories and industries discharge harmful chemicals into the water such as cyanide, zinc, lead, copper, mercury, etc. Many industries and factories use freshwater to carry away waste from the plant and into rivers, lakes, and oceans (Industrial Water and Water Pollution, 2016 http://www.water-pollution.org.uk/industrialwaste.html). When these substances enter these bodies of water in such high amounts, fish and other animals are killed immediately. Sometimes these toxins enter the food chain and build up as you get higher in the food chain. This is called bioaccumulation. The toxins will eventually kill birds, fish and
Also, when the algae decomposes, it takes away the dissolved oxygen which organisms need as well (River Water Quality and Pollution). Another way humans can pollute water is when factories and industries discharge harmful chemicals into the water such as cyanide, zinc, lead, copper, mercury, etc. Many industries and factories use freshwater to carry away waste from the plant and into rivers, lakes, and oceans (Industrial Water and Water Pollution, 2016 http://www.water-pollution.org.uk/industrialwaste.html). When these substances enter these bodies of water in such high amounts, fish and other animals are killed immediately. Sometimes these toxins enter the food chain and build up as you get higher in the food chain. This is called bioaccumulation. The toxins will eventually kill birds, fish and