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游客2023-11-05  7
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答案                         The African Elephant
    The African elephant, the largest land animal remaining on earth, is of great importance to African ecosystem. As a big plant-eater, it largely shapes the forest-and-savanna surroundings in which it lives, setting the terms of existence for millions of other animals that live in its habitat.
    It is the elephant’s great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas.
    What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.
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