Includes bibliographical references (pages 184-185) and index.
Contents:
Nature and the Earth -- The human body and mind -- Physics and space.
Summary:
Provides easy-to-explain answers to questions about science, including why is the sky blue, why can't humans breathe underwater, and why is the universe expanding.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.