Teachers always ask us to save as much water as possible, but most students just forget it quickly. Imagine there is no water on earth, there will be no life, because we need water to keep living. The animals and plants also need water to
This is the earth. The green part is land. The blue part is sea. The white part is clouds. Our earth is very beautiful and interesting. There are rivers, streams, seas and lakes. There are hills and mountains. There are woods, jungles and