Peter avoids buying products made of plastic because it takes too long for them to decompose. (A 1000 years)
Do you think it is a necessary or unnecessary habit? Why?
Katy's father has installed solar panels at home. From now on, she thinks that eletric bill will be reduced.
Is she right? Why?
A wind farm will be built near Simon's village. He is a little bit worried because it has some disadvantages.
What are the disadvantages in building a wind farm?