Earth: Our Only Home

In the vast universe, the earth is just a planet with a radius of more than 6300 kilometers. By enumerating figures, we can deeply feel the smallness and insignificance of the earth. However, the earth is our only home, and we must cherish and cherish it.

Migration base hypothesis

Scientists put forward the idea of establishing an immigration base on Mars or the moon. These ideas make us realize that we must cherish and cherish our only home-the earth.

Cradle of life

The earth is the planet that breeds human beings and the cradle of life. She nourishes everything with her beauty and nobility, and provides us with a warm harbor.