1 what is environment
2 is this environment a safe place for humans
3 is this environment spoiled by us 
4 what are we doing to protect our environment
5 is our environment pollution free
6 our environment is only for for humans or even the living creatures
7 environment is created by whom 
8 is environment our life 
9 can we survive without any environment
10 what should we do to make environment our homes
*How do you think we can protect our environment ?
*What are the problems faced by our environment nowadays?
*What do you mean by the word "Environment" ?
*Do you think our environment plays an important role in our life?
Hope it helps and pls mark as the best answer. :-)