The Earth is place where we can live,But currently the people usually destroy it.
So,we must help together preserve the earth.
The way do you can preserve the earth have many ways such as turn off light when you don't use, use paper two pages, travel with public transport, plant a trees, turn off water if you don't use it and eat fruit or vegetable in the season.
All of I say it is easy ways you can do and we can do. So, when you know you doing it now because it will help our earth better than before.