This Title Explains What An Ecosystem Is And How The Plants And Animals Within An Ecosystem Rely On And Effect Its Existence. Different Types Of Ecosystems Are Described, As Well As The Food Webs Within Them. How Some Changes To An Ecosystem Can Be Good And How Some Harmful Changes Can Destroy Them. Teaches Students What An Important Role They Can Play In Keeping These Intricate Ecosystems Alive.
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语言 西班牙语 ● 格式 PDF ● 网页 24 ● ISBN 9781627174817 ● 出版者 Rourke Educational Media ● 发布时间 2012 ● 下载 3 时 ● 货币 EUR ● ID 5971741 ● 复制保护 Adobe DRM
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