The sea urchin is known for its sharp spikes, which poke and hurt animals that dare to approach it. This book profiles the sea urchin and other spiny animals that use body spikes for protection. Young naturalists will learn how this defense works and understand how these animals use their spikes to keep predators away.
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语言 英语 ● 格式 PDF ● 网页 24 ● ISBN 9781448828456 ● 出版者 The Rosen Publishing Group, Inc ● 发布时间 2011 ● 下载 3 时 ● 货币 EUR ● ID 8667383 ● 复制保护 Adobe DRM
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