1. (Visual pollution/ Radioactive pollution/ Light pollution): the release of unwanted radioactive material into the environment. 2.When (visual/ thermal/ radioactive) pollution happens, the water temperature in streams, rivers or oceans changes. 3. (Land pollution/ Noise pollution/ Thermal pollution): Any loud sounds that are either harmful or annoying to humans and animals. 4. We can not see the stars at night because of (light/ rain/ air) pollution. 5. (Poison/ Poisonous/ Poisoned) is a substance that can make people and animals ill or kill them if they eat or drink it. 6. Farmers in our area usually use (pesticides/ herbicides/ sewage) to kill insects. 7. This river will soon become (pollution/ polluted/ pollutant) if the people here keep dumping waste into it. 8. (Aquatic/ Electric/ Chemical) plants may also die because of the polluted water. 9. Too much carbon dioxide (CO2) in the atmosphere (causes/ leads/ results) global warming. 10. Waste from households will gradually (contamination/ contaminate/ contaminant) the lake. 11. If the factories (continue/ continued/ continues) dumping poison into the lake, all the fish and other quantic animals will die. 12. Find the word which has different stress pattern from the others A. athletic B. dramatic C. scientific D. heroic