This book explains what an ecosystem is and how the plants and animals within an ecosystem rely on and affect the ecosystem’s existence. Different types of ecosystems are described, as well as the food webs within them. Through its presentation of how some changes to an ecosystem can be good while others are harmful, students discover the important role they can play in keeping ecosystems alive and well.
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格式 PDF ● 网页 24 ● ISBN 9781625131768 ● 编辑 Britannica Digital Learning ● 出版者 Britannica Digital Learning ● 发布时间 2014 ● 下载 6 时 ● 货币 EUR ● ID 3323016 ● 复制保护 Adobe DRM
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