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发表于2024-11-10
Why is the Sky Blue? pdf epub mobi txt 电子书 下载 2024
"Why?" is a question that every child asks. Here we present clear, scientific answers to questions about the world that surrounds your students. The answers to such questions as "Why is the sky blue?" and "Why does the ocean have tides?" tie in to physical, natural, and life science curricula while providing explanations for universal phenomena.
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Why is the Sky Blue? pdf epub mobi txt 电子书 下载 2024