Earth is made of different thingsgases, rocks, soil, and water. A gas is something that can change shape and size. Gases helps beginning readers understand this basic element by looking at examples such as air and steam; the book also discusses how gases help protect the Earth.
格式 PDF ● 网页 24 ● ISBN 9780822563341 ● 出版者 Lerner Publishing Group ● 发布时间 2005 ● 下载 3 时 ● 货币 EUR ● ID 5845979 ● 复制保护 Adobe DRM
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