The earth rotates one week is the time of day

Today, I read the book "Sunrise and Sunset" and understand what it is like in the night and in the daytime.
When the earth rotates, half of it will face the sun, and the sun will not shine. This half is the night. But the other half of the earth faces the sun and is illuminated by the sun. This half is the day. I also know from the book that the earth turns around the sun and the moon turns around the earth. The earth rotates around the sun for a year, and the moon has thousands of stars around the sky. These stars are not as small as we seem, but they are much larger than Earth. From the earth, the sun and the moon look almost the same. In fact, the size of the moon is only a quarter of the earth, and the sun is more than a hundred times larger than the earth.
If there is no sun, all the plants will starve to death. Without plants, herbivores will die. Without herbivores, carnivores will be starved to death. The earth will fall into darkness, cold and desolateness. How much we are? Need the sun!

The earth rotates one week is the time of day

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