Be a Friend to Trees 在线电子书 图书标签:
发表于2024-11-10
Be a Friend to Trees 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
Why should you be a friend to trees? Trees are a valuable natural resource. People depend on trees for food, and animals depend on trees for food and shelter. But most important, we depend on trees because they add oxygen, a gas we all need, to the air. While trees give us many wonderful products, we must also protect them because we can't live without them.
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Be a Friend to Trees 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024