Soils

"Using simple tests, students learn to identify sand, clay, and humus in soil. They also study how water affects different kinds of soi. Through long-term experiments, they explore how roots and plants grow in various soils and how, with the help of worms, old plants decompose and become part of soil. Then, applying what they have learned, they investigate their own local soil."--Page 3.

שנה

1996

שפה

English

סדרה

Science and technology for children

הוצאה

Carolina Biological Supply Co.

מהדורות

1

עמודים

206

ISBN

9780892787371

מקור הנתונים: Wikidata