1. Conservation also includes searching_________ alternative fuels, such as the energy of the Sun. 2. These days everybody is aware___________ the dangers of smoking. 3. Clean air provides us__________ a healthy supply of oxygen. 4. When wastes are poured _________ the atmosphere, the air becomes contaminated and unpleasant to breathe. 5. Some large cities may have to ban cars_________ the city centre to wipe _________ smoke. 6. The fight___________ pollution of our environment is important as well. 7. People used to believe that the world’s natural resources could never be used__________. 8. Conservation is also concerned_________ the reclaiming of land. 9. Protect your child_________ direct sunlight by using a sunscreen. 10. Vehicles account________ air pollution in the city.