#IELTS# are they right?pls help me improve them , thank you! (8) The consumption of coal, oil and gas is the major source of carbon emissions, which are believed to be responsible for global warming. If this trend continues, the sea level would rise and it may lead to disastrous consequences. To solve this problem, the mankind needs to cut down the use of fossil fuels and thus reduce carbon emissions. (9) As the world population keeps growing, the demand for water increases every year. However, the amount of fresh water is limited and in many countries and regions, water shortage poses a threat to people’s survival and health. As the administrator of the society, the government has the obligation to control the water people use in their daily lives. For example, it can increase water price to discourage people from using too much water. (10) Moreover, fertilizers and pesticides are commonly used in agriculture and the chemicals may pollute the underground water. Many factories discharge waste water into the river and lake, which also leads to serious water pollution. Therefore, it is urgent to solve these problems and protect valuable water resource.