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8. Volunteers will **suggest** ideas to reduce plastic waste at schools. **Task 6**: 1. legal - e. illegal 2. back-up - f. impossible 3. endangered - g. protected 4. extreme - b. moderate 5. giant - c. tiny 6. lights-out - h. bright 7. practical - d. easy 8. strict - a. unique **Task 7**: 1. The government need to take **extreme** measures to cope with global warming. 2. Forest fires have destroyed the natural habitats and threatened many **endangered** species. 3. Local governments have to take **practical** actions to prevent the extinction of many wild animals. 4. **Strict** initiatives have been introduced to reduce energy consumption effectively. 5. **Giant** pandas are endangered, so strict conservation efforts are crucial to protect them. 6. **Extreme** weather events highlight the urgency of environmental protection. 7. A **back-up** plan is necessary for dealing with extreme weather conditions. 8. One **practical** method to reduce air pollution is to ban vehicles from city centres. **Task 8**: 1. Our local environmental **organization** is working hard to promote recycling. (ORGANISE) 2. Conservation efforts are important for the **survival** of endangered species. (SURVIVE) 3. She is a keen **supporter** of environmental activities, always participating in tree planting events. (SUPPORT) 4. His **presentation** on plastic pollution was well-prepared and helpful. (PRESENT) 5. We mustn't participate in **illegal** wildlife trade. (LEGAL) **Task 9**: 1. People were concerned that pets or **wildlife** could be affected by the pesticides. 2. **Climate change** is destroying large areas of tropical rain forest. 3. Among causes of **biodiversity**, car exhaust fumes may be the worst offender. 4. Javan rhinos, Amur leopard, and Sunda Island tiger are some of the world's most **endangered**. 5. Water pollution occurs when **animal parts** - often chemicals or microorganisms - contaminate a body of water. 6. Our planet earth has a natural environment, known as **ecosystem**, which includes all humans, plant life, mountains, glaciers, atmosphere, rocks, galaxy, massive oceans, and seas. 7. **Climate change** refers to long-term shifts in temperatures and weather patterns. 8. With so many areas of woodland being cut down, a lot of wildlife is losing its natural **habitat**. 9. **Biodiversity** is the diversity of genes, species and ecosystems that occupy the earth. 10. Many shoppers post on the social media accounts of major brands urging them to stop selling materials made of **animal parts**. **Task 11**: 1. **C. Soil** erosion occurs primarily when dirt is left exposed to strong winds, hard rains, and flowing water. 2. Many factors related to **B. cutting** down trees contribute to driving species to extinction. 3. Is the environmental impact of petroleum often negative because it is toxic to almost all **D. forms** of life? 4. Scientific studies indicate that **B. extreme** weather events such as heatwaves and large storms will become more frequent. 5. As **D. climate change** worsens, dangerous weather events are becoming more frequent or severe. 6. If one part of an ecosystem changes quickly, it can upset the balance and put wildlife in **C. danger**. 7. Starting as a lights-out event in 2007, Earth Hour has grown to become an international **A. movement** for the environment. 8. Air pollution is mainly caused by waste gases that **B. come** out of vehicles, machines, or factories.