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Oak Foundation supports global partners through grant-making to build a safer, fairer, and more sustainable world for all. Oak , genus of about 450 species of trees and shrubs in the beech family (Fagaceae), distributed throughout the north temperate zone and at high altitudes in the tropics. Oak species are characterized by alternate, simple, deciduous or evergreen leaves with lobed, toothed, or entire margins. Oak plants are more than just giant trees—they are homes, food factories, and important for both forests and people. Learning about the oak plant teaches you about plant structure, habitats, uses, and even how animals depend on them. If you want to ace your biology topics or just love exploring nature, remember the secrets of the oak ! A visual identification guide to oak trees, including pictures of oak leaves, bark, and acorns to assist you in identifying the correct type of oak tree.
