If the Earth is greener, we will be healthier and happier

If you live in the city center, you will have to put up with noise pollution
We will help protect the environment if we use paper bags
If we waste water, there will be a shortage in the future
If we recycle paper, we will save a lot of trees
If you often do exercise, you will feel healthier
The Earth will be greener if we can prevent the environmental pollution