The oak tree, with its dense hard wood, is used extensively in the manufacture of furniture and cabinets. Oak trees have root systems that penetrate the soil to depths of over 30.5 m (100 ft) in search of water.

Avril Ramage/Oxford Scientific Films

Oak," Microsoft® Encarta® 96 Encyclopedia. © 1993-1995 Microsoft Corporation. All rights reserved.

Texas A & M UniversityVascular Plant Image Gallery.

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