Trees are termed as lungs of the earth because these small natural factories produce free of cost oxygen and consume carbon dioxide from the atmosphere and keep the environment in balance. These are also termed as ornaments of the earth because of increasing its beauty. We can't imagine an earth with out trees. Many species of trees are found in the world. However, the current question is to know about the specie that dominate over the globe and about the approximate number of trees of the dominant specie.
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