Insect Colony Movement     In general, colonies of social insects such as bees or ants move either to change nesting sites when the current site deteriorates in quality,...

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

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Changes in Native American Food Production Changes in Native American Food Production 1 Native Americans expanded their sources of food in the centuries around the end of the fir...

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...

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