Our streets are dirty.
Stop throwing litter on the streets! Use garbage bins and recycle paper, glass and plastic. Government should more jobs to homeless people as street and park cleaners.

We use cars too often. Cars destroy our atmosphere.
We should go on foot more than by car. Use bicycles and public transportation!
Government should offer more and cheaper public transportation.

There is not much clean water left on Earth.
We should save water.
Stop taking long showers!
Turn off the water tap when you brush your teeth!