Let's-Read-and-Find-Out Science: Be a Friend to Trees 自然科学启蒙-和树做朋友

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SKU:
9787550210417
Language: Simplified
Paperback/Hardcover: Paperback
Page: 32
Aurthor: Wendy Pfeffer, Helen K.Davie
Publisher: 北京联合出版公司
Let's-Read-and-Find-Out Science: Be a Friend to Trees 自然科学启蒙-和树做朋友

  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.