Помогите какие вопросы можно написать на тему be clean be green

Желательно 7 вопросов

1) What should you do to proct the nature?

2) How long does it take for a plastic bag to dissolve?

3) Why do we need trees?

4) Where should you put you trash?

5) Name recycling material?

6) How old is the mankind?

7) Where should smokers smoke?

8) Have you ever planted a tree?