We all need water. The problem is there is often too much or too little.And there are other problems, when it rains a lot the level of the rivers rises. The water runs over the banks People drown. Their cars and houses ruined.Animals drown.too.Many big cities in Asia, Latin America and Europe often have floods. Sometimes it doesn't rain for a long time. Plants die Animals die,too. People have no food .Many countries in Africa have problems with droughts. Every year these droughts get worse and worse Industry always pollutes water with chemicals. Some farmers use too many chemicals These enter the rivers and lakes. They kill the plants and fish. The world is getting warmer,so water levels are rising Climates are changing some countries are becomimg hotter and drier This affects agriculture. People want to control global warming, but they can't agree about the best solutions.