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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شكل PDF ● صفحات 24 ● ISBN 9781625131768 ● محرر Britannica Digital Learning ● الناشر Britannica Digital Learning ● نشرت 2014 ● للتحميل 6 مرات ● دقة EUR ● هوية شخصية 3323016 ● حماية النسخ Adobe DRM
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