Situational picture × Earth Encyclopedia × Wit question and answer, knowledge is greatly improved! Graphic Q&A stimulates children's curiosity and cultivates all-round knowledge and thinking. The earth is the planet we live on, full of all kinds of surprises and beautiful features. Open this book and let us explore the mysteries of the earth together! ◆Why is the mountain top temperature lower than the ground? ◆How did the tornado form? ◆Why does lightning appear before thunder? ◆Why do beautiful rainbows appear after rain? ◆Why doesn't the white cloud in the sky fall? ◆Why sea water is saltySituational picture × Earth Encyclopedia × Wit question and answer, knowledge is greatly improved! Graphic Q&A stimulates children's curiosity and cultivates all-round knowledge and thinking. The earth is the planet we live on, full of all kinds of surprises and beautiful features. Open this book and let us explore the mysteries of the earth together! ◆Why is the mountain top temperature lower than the ground? ◆How did the tornado form? ◆Why does lightning appear before thunder? ◆Why do beautiful rainbows appear after rain? ◆Why doesn't the white cloud in the sky fall? ◆Why sea water is salty
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