The key answer of exercise 3

MY WORLD IS NOT YOUR RUBBISH BIN

I live in a huge city with two million people so there are several typical environmental problems, such as traffic and air pollution. For me, one of the worst problems is rubbish on the streets,

Firstly, rubbish on the streets is unhealthy for both humans and wildlife. For example, rubbish attracts animals like rats and they spread diseases. Other animals can easily eat something dangerous in the rubbish and die. A lot of rubbish goes down rivers and adds to the pollution in the sea. Finally, it costs a lot of money to clean up our rubbish. We could spend this on many more useful things. Young people need to set an example for the next generation and always put their rubbish in the bin - if possible, a recycling bin. They could also start a local campaign to encourage other people to recycle. For instance, at our school we organised a petition to put more bins on the streets.

We got 2,000 signatures! In my opinion, it's not that difficult to solve the problem of rubbish. I'm sure we could all do a lot more to improve the situation. Our planet is in our hands!