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发表于2024-11-25
Electricity pdf epub mobi txt 电子书 下载 2024
Why are there no green mammals? How do hurricanes and tornadoes form? Colorful photos and simple text answer questions such as these and illustrate the essential elements of our natural world. From the farthest reaches of the solar system to the origins of rocks found in our yards, these books explain key scientific concepts in an easy-to-understand way. Included in each book are a glossary, index, Did You Know? section, and Want to Know More? resources.
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Electricity pdf epub mobi txt 电子书 下载 2024