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List Price	O&A Price
$105.00	$78.80
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$26.25	$19.70

NEW! Earth Science: Understanding Earth's Systems - Gr. 3-7

Earth is broken down into four systems: atmosphere, geosphere, hydrosphere, and biosphere. These systems are all interconnected and help provide balance on Earth and in Earth’s ecosystems. Your readers learn about cycles associated with each system and how they benefit Earth. These books also discuss how people interact with each system and how human activities can negatively impact these systems. Full-color photographs and relevant captions help your readers make connections between the main text and images.

4 Book Set

Set Includes

	Buy the full set. ATOS/POINTS
	OA236502		NEW! Earth's Atmosphere ©2019 | M. Shofner	-
	OA236503		NEW! Earth's Biosphere ©2019 | C. Hofer	-
	OA236504		NEW! Earth's Geosphere ©2019 | J. Tolli	-
	OA236505		NEW! Earth's Hydrosphere ©2019 | A. Hayes	-

Full-color Photographs Glossary Index Web sites 32 pages 7-1/8" x 8 1/2"