What does this phrase mean "they have no natural predators."​

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Which quotation from the passage best supports the themethat humans have a natural desire to learn about theworld? "they were men. i remember the dead man's face.""at least, we make a beginning."and the magic tools are broken—but we can look atthem and wonder."but they were men who built the city, not gods ordemons.

Apply the ideas of the plain language movement to make the paragraph under "before" in section i more user-friendly.