SCIENCE
(3) K-3 National Geographic Readers series. Earth's neighbor is explored in this friendly, informative account of the planet's characteristics, historical explorations, and possible future human missions. Helpful comparisons to phenomena on Earth help readers to understand past and present conditions on Mars. Colorful layouts include photographs and illustrations of Mars, its features, and spacecraft, as well as fact boxes and jokes. A quiz is appended. Glos., ind.

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