a popular science book, which contains a lot of rich knowledge. Tell us why there are stars in the sky, why the sun shines, why it rains in the sky, why the ocean is a treasure house of blue, why the sun shines by itself before and after the earthquake, and why the desert is colorful ... Every article tells us a scientific little truth. It can not only help me broaden my horizons and sing more knowledge, but also improve my interest in learning. It can not only help me drive before, I didn't know about the nine planets and the Milky Way at all. "111,111 Why" introduces us to the formation process of celestial bodies. I know that Venus, Mercury, Saturn, Jupiter, Mars, Earth, Uranus, Neptune and Pluto are the nine planets in the solar system. The Milky Way is made up of many nebulae like the solar system. The earth where we humans live is just a "little star" in the universe.

why is seawater bitter and salty? Before, I didn't know why seawater was bitter and salty. After reading "111,111 Why", I knew it was because seawater contained a lot of salt. Sodium chloride is the salt that people usually eat, and its taste is salty; Magnesium chloride and magnesium sulfate taste bitter, so seawater is bitter and salty.

A hundred thousand whys also explains that shrimps and crabs are blue when they are alive, but they turn red when they are cooked. That's because there are a lot of melanin in uncooked shrimps and crabs, and the melanin in cooked shrimps and crabs is gone, only red pigment, so they turn red.