Includes bibliographical references (pages 31) and index.
Contents:
What is the hydrosphere? -- People and the hydrosphere -- How people use surface water -- How people use ground water -- Overconsumption -- Pollution -- How can humans help?
Summary:
Presents how humans use water, positively and negatively affect water, and how to protect the water supply.
Series:
Fact finders. Humans and our planet Fact finders. Humans and our planet
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.