Еxercise
1. In addition, the ozone layer becomes thinner and this may
lead to many phenomena, like ____ , that may destroy our planet and our lives.
2.And we all know that the main reason why the Earth suffers is ____.
3. First of all, we should not throw any garbage and all countries must work the system of ____ out.
4. If we all get used to sorting it, we will simplify the process of ____ .
5. In addition, we may use modern technologies to invent a new kind of ____ to substitute oil with it.
6.We should also ____ animals not to let any species disappear.
7. More trees, bushes, flowers must be planted, because they clean the air and serve as ____ for many animals, birds, and insects.
Сhoose the correct word or phrase