Biological Classification - Characteristics of Living Things

The video discusses the existence of simple organisms on Earth over three and a half billion years ago, focusing on stromatolites as a significant part of the fossil record. It explains that early organisms resembled modern bacteria and were ancestors to current and extinct species. The video outlines seven basic characteristics shared by all living organisms: cellular structure, energy use, homeostasis, growth, response to stimuli, reproduction, and adaptation to environmental changes.

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