How Have Humans Today Changed Physically from Early Humans on Earth?
Introduction
Early humans, who lived millions of years ago, looked quite different from humans today. Over time, humans have evolved and undergone physical changes that have helped them adapt to their environment. In this article, we will explore the physical differences between early humans and humans today.
Body
1. Brain Size and Skull Shape
Early Humans: Early humans had smaller brains and different skull shapes compared to modern humans. They had a prominent brow ridge and a flatter forehead.
Humans Today: Humans today have larger brains and a more rounded skull shape. Our foreheads are more vertical, and the brow ridge is less pronounced.
2. Body Size and Height
Early Humans: Early humans were generally shorter and had a more robust build. They needed strength for survival in harsh environments.
Humans Today: Humans today have varied body sizes and heights. We have become taller on average, with factors such as nutrition and overall health playing a role.
3. Facial Features
Early Humans: Early humans had larger jaws and prominent brow ridges. Their faces projected forward, and they had a more ape-like appearance.
Humans Today: Humans today have smaller jaws and less prominent brow ridges. Our faces are flatter and have a more human-like appearance.
4. Dentition
Early Humans: Early humans had larger teeth, including larger canines, that were adapted for a diet consisting of tough plant matter and raw meat.
Humans Today: Humans today generally have smaller teeth that are adapted to a diet with more processed and cooked food.
5. Limb Proportions
Early Humans: Early humans had shorter legs and longer arms, which were advantageous for climbing trees and traversing different landscapes.
Humans Today: Humans today have longer legs and shorter arms, which are more suitable for walking and running efficiently.
Conclusion
In summary, humans today have undergone significant physical changes compared to early humans. These changes include increased brain size, a more rounded skull shape, taller stature, less prominent brow ridges, smaller jaws, smaller teeth, and different limb proportions. These adaptations have allowed humans to thrive, survive, and excel in their ever-changing environments.
It is fascinating to observe the physical transformations that have occurred over millions of years and how they have shaped the human species we see today.
