X why Z?
By: by Mark Shulman and James Buckley Jr
Contributors: Buckley, James, Jr., 1963- author
Publisher: Time Home Entertainment Inc.; Time Inc. Books
Published: 2013
Place of publication: New York, NY
Language: eng
Number of pages: 96
ISBN-13: 9781618930934; 9781618933720
Subjects: Children's questions and answers; Questions and answers
Description: Presents answers to a variety of scientific questions, including why teeth fall out, why school buses are yellow, and why some trees stay green all winter.
Notes: At head of title: Time for kids.

Includes index.
Table of contents: title: Introduction; title: Human body; title: Animals; title: Nature; title: Earth and space; title: Inventions; title: Places; title: History.