Răspuns:
1. examples: train, bus
2.CFC gases are dangerous because they can cause frostbite to the skin and other complications.
3. On a working holiday, you can travel, visit nice places, meet new people, make new friends.
4.In a recycling bank you can put trash cans, all plastic bottles, cardboard, books and other recyclable things.
5. You can produce electricity with hydropower, solar panels, wind turbines and geothermal heat pumps.
6. Few of the things that make air quality worse are the pollution, transportation, exhaust from industrial factories and other things.
