SCIENCE
Olien, Rebecca

Water Sources

(4) K-3 First Facts: Water in Our World series. Some basic concepts--such as where water comes from, how it collects in aquifers, and why we can't drink ocean water--are superficially explained in simple, large-print sentences illustrated with photos and diagrams; fact boxes provide deeper information on some pages. Water conservation is urged toward book's end, and an easy experiment and critical thinking questions are also provided. Reading list. Glos., ind.

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