"A guide to basic STEM concepts"--Cover. Includes bibliographical references (page 24) and index.
Summary:
"Earth is home to a huge range of plants and animals. This rich mixture is biodiversity. Find out why it is important for the planet, why it is under threat, and what we can do to help"--Back cover.
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.