The monarchs are missing a butterfly mystery

Monarch butterfly populations have been declining for the last two decades, and scientists aren't sure why. This book takes readers on a quest to discover what is happening and what scientists know. --

Main Author: Hirsch, Rebecca E.
Format: Books Print Book
Language: English
Published: Minneapolis : Millbrook Press, [2018]
Subjects:
Summary: Monarch butterfly populations have been declining for the last two decades, and scientists aren't sure why. This book takes readers on a quest to discover what is happening and what scientists know. --
Physical Description: 56 pages : illustrations (chiefly color), color maps ; 26 x 26 cm
Audience: Age 8-12.
Grade 4 to 6.
Bibliography: Includes bibliographical references and index.
ISBN: 9781512452501
1512452505