发表于2025-02-07
Mountains and Valleys 2025 pdf epub mobi 电子书
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Mountains and valleys, shaped over hundreds of millions of years by various geologic forces, encompass the highest and lowest places on Earth. Read how a volcano is born, why Mount Everest is still growing, and what might happen when Africa's greatest valley cracks apart.
Mountains and Valleys 2025 pdf epub mobi 电子书