II)-Complete the sentences, using the correct form of the words in brackets. 1. The soil becomes _______________ because of the use of so many pesticides and fertilizers. (contaminate) 2. _______________ waste spills can contaminate groundwater. (industry) 3. In many developing countries, water pollution is usually a leading cause of ________________. (die) 4. ____________ elements have been found in both ground and underground water sources. (pollute) 5. Fish and many other animals are killed by ______________ in their habitat. (pollute) 6. Astronomers are concerned about light pollution because they have __________ in viewing activities in the sky and outer space. (difficult) III)-Rewrite the sentences, using the words in brackets. You can make some changes. 1. There are asthma, allergies and other respiratory illnesses when air pollution happens. (leads to) 2. Aquatic life suffers or dies because there is thermal pollution. (because of) 3. Water in the Cau River becomes brown and has terrible smell because the waste water is released from the paper mill in Thai Nguyen City. (so) 4. People use too much herbicide to treat weeds, so water in rivers, canals, lakes are extremely polluted and has bad effects on people’s health. (because) 5. Many fish in the river die due to the increased temperature of water. (because) 6. Because plastic bags take so long to decompose, nearly all of them still exist in the environment today. (so)