Human Responsibility for Megafaunal Extinctions     Paleontologists are intrigued by the question of what caused a diverse group of large animals (megafauna) to become e...

TF阅读真题第854篇Why Did Social stratification Emerge

TF阅读真题第799篇Surviving as a Conifer

Science and Nineteenth-Century Visual Arts     In the middle of the nineteenth century, rapid developments in the sciences and popular fascination with recent technologi...

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复时间 2022-09-28 2023-12-13 2024-04-13 2025-04-12 Adaptations of Marine Mammals     Warm-blooded marine mammals and birds require some special adaptations to permit t...

  Making the Most of Dark Nights       The main breeding station of the marine bird known as the swallow-tailed gull is the Galápagos Islands, which straddle...

Britain's Industrialization     The Industrial Revolution was an extended period of economic growth and change brought about by the application of mineral energy and t...

Horns in Beetle Competition       Intraspecific competition-that is, competition between members of the same species for limited resources-can be a complex phenome...