Environment

4. Cutting down trees in order to use the land for farming or the wood for furniture is called__________
7. One way to help save the environment is to________________ plastic, paper and glass.
10. Many species of the Earth are in danger of______________-
12. _________happens when the temperature of the Earth rises.

1. It is better to walk or use the _________ instead of using the car.
2. Coal, natural gas and oil are called _____________ and burning them releases carbon dioxide and other harmful gases that cause the greenhouse effect.
3. ______________ is when the sea and water contain chemicals that are harmful for animals and people.
5. When the air in cities contains gases that are harmful for people and animals, we call it__________
6. Too many people on Earth is a phenomenon also known as__________
8. __________comes from generation systems that do not produce any kind of pollution.
9. A______________ is a place where we throw waste material.
11. The rise in the temperature of the planet is called _____________