How is soil made? /
Heather L. Montgomery.
- St. Catharines, Ont. : Crabtree Pub. Co., c2010.
- 32 p. : ill. ; 29 cm.
- Everybody digs soil. .
GRL: P
Includes bibliographical references and index.
What is soil? -- All about humus -- Nutrients in soil -- Nutrient cycles -- Water for life -- Fresh air -- Weathering rock -- Break it down -- Carried away -- Dumped on the land -- Soil and climate -- Soil takes its time -- Soil conservation.