1. Air pollution - An environmental condition caused by sound disturbances like traffic or construction., 3. Carpooling   - The practice of sharing a car journey with others to reduce traffic and pollution, 5. Congestion   - Overcrowding on the roads that leads to traffic jams, 6. Cut down on   - To reduce the amount of something, 7. Diesel engine   - A car engine that uses diesel fuel, 8. Electric vehicle   - A type of vehicle that runs solely on electricity, 9. Hybrid vehicle   - A car powered by both an electric battery and a combustion engine, 10. Environment   - The natural world, including land, air, and water, 12. Exhaust fumes   - Harmful gases produced by vehicles., 15. Junction   - An intersection or meeting point of two or more roads., 16. Knock down   - To collide with and injure a pedestrian using a vehicle., 17. Motorway   - A large, major road designed for fast traffic., 18. Obey   - To follow the rules or commands given, especially regarding traffic, 20. One-way system   - A system where all vehicles must move in one direction., 25. Pollute   - To contaminate the environment with harmful substances., 26. Renewable energy   - Energy sources like solar or wind that can be replenished naturally., 27. Run over   - To hit and drive over someone or something with a vehicle.,

high note 3, unit 4e

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