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Homo erectus

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General Biology I

Definition

Homo erectus is an extinct species of early human that lived approximately 1.9 million to about 110,000 years ago, known for its significant advancements in tool use and social behavior. This species is crucial in understanding the evolution of modern humans, as it exhibited traits such as a larger brain size and the ability to walk upright, which are important markers of human evolution.

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5 Must Know Facts For Your Next Test

  1. Homo erectus is one of the longest-living hominin species, existing for nearly 2 million years across Africa and Eurasia.
  2. This species displayed a significant increase in brain size compared to earlier hominins, with an average cranial capacity of about 900 to 1,100 cubic centimeters.
  3. Homo erectus is known for its development of more advanced tools known as the Acheulean tool culture, which included bifacial hand axes.
  4. Evidence suggests that Homo erectus may have been one of the first hominins to use fire for cooking and warmth, marking a critical advancement in human survival.
  5. This species likely exhibited more complex social structures and possibly even early forms of communication, as indicated by archaeological findings.

Review Questions

  • How did the physical and cognitive traits of Homo erectus contribute to its survival and adaptation in various environments?
    • Homo erectus had several physical traits, such as a larger brain and an upright posture that allowed it to adapt well to diverse environments. The increased brain size likely facilitated advanced problem-solving skills and social behaviors necessary for survival. Its ability to walk upright enabled long-distance travel in search of food and resources, while developing tools made from stone provided essential means for hunting and processing food.
  • Evaluate the significance of tool-making advancements associated with Homo erectus in the context of human evolution.
    • The tool-making advancements of Homo erectus, particularly the Acheulean hand axes, marked a critical leap in cognitive development and manual dexterity. These tools allowed for more effective hunting and gathering, leading to better nutrition and survival rates. This advancement not only set Homo erectus apart from previous hominins but also laid the groundwork for future tool-making innovations seen in later species like Homo sapiens.
  • Discuss the implications of fire use by Homo erectus on their social structure and lifestyle compared to earlier hominins.
    • The use of fire by Homo erectus had profound implications for their social structure and lifestyle. Fire provided warmth, protection from predators, and a means to cook food, which could enhance nutritional value and make food easier to digest. This likely fostered communal activities around cooking and warmth, strengthening social bonds among individuals. Compared to earlier hominins who did not control fire, Homo erectus was better equipped to adapt to varying climates and environments, allowing them to expand their range significantly.
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