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The living things in an ecosystem affect each other in many ways. The consumers that kill other animals for food are called predators.The word predator usually brings to mind pictures of lions and wolves,but such creatures as robins,frogs,and humans

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isolated adj. 孤立的 jurisprudence n. 法学 lander n. 登陆者 latitude n. 纬度 launch n.v.发射（导弹、火箭等） layperson n. 外行 lichen n. [植]青苔，地衣 locale n. 场所 LR=

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