The World Book Encyclopedia, Tom 4World Book, 1994 - 666 An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students. |
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Strona 976
... soil , and wildlife resources . Forests absorb rain water and so keep it from running off the land too rapidly . They thus help prevent rain water from washing away the soil . Forests also provide homes for wildlife . In the same way ...
... soil , and wildlife resources . Forests absorb rain water and so keep it from running off the land too rapidly . They thus help prevent rain water from washing away the soil . Forests also provide homes for wildlife . In the same way ...
Strona 977
... soil better than grain crops do . Terracing helps prevent soil erosion on hillsides . Farmers build wide , flat rows called terraces on the hill- sides . A terraced hillside resembles a large staircase . The terraces hold rain water and ...
... soil better than grain crops do . Terracing helps prevent soil erosion on hillsides . Farmers build wide , flat rows called terraces on the hill- sides . A terraced hillside resembles a large staircase . The terraces hold rain water and ...
Strona 1090
... soil . Farmers in the United States plant cotton seeds between February and June , depend- ing on the region . Growers till ( plow ) the soil sometime between the last harvest and the new planting season . Tilling loosens the soil so ...
... soil . Farmers in the United States plant cotton seeds between February and June , depend- ing on the region . Growers till ( plow ) the soil sometime between the last harvest and the new planting season . Tilling loosens the soil so ...
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