Human characteristics include aspects such as standing upright, using tools to gather food or kill animals, and evolving different body shapes. Other aspects include brains that are continually growing bigger and more complex, using symbols and language, and developing a social system.Know More
Over the past several million years of evolution, certain unique characteristics have defined the human species. Perhaps the most significant is the ability of the species to stand and walk in an upright position. This enables the human being to hunt, move easily from place to place and defend themselves from attacks by predators.
The human body and brain evolved and changed more than any other species. The shape of the body evolved according to the regions and climates and helped the species to survive. The human brain from the earliest origins of man to the present day, has expanded and grown in complexity and ability. It has learned to adapt to changing needs and environmental factors, leading to the supremacy of the species. Key human characteristics, such as making and using tools and weapons, developing a system of communication through symbols and sounds, and developing social, political and economic systems of interaction, have contributed significantly to the survival of the species.Learn more about Human Anatomy
The average size of a human eye is 1 inch, roughly 2/3 the size of a ping pong ball, and weighs approximately 1/4 of an ounce. Size in adults varies little and is relatively uniform with an allowance for 2 to 3 millimeters.Full Answer >
According to About.com, water makes up between 65 and 90 percent of all cells in the human body. The remaining elements by mass include oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, potassium, sulfur, chlorine, sodium, magnesium and trace amounts of iron, cobalt, copper, zinc, iodine, selenium and fluorine.Full Answer >
A human cell is a tiny container of chemicals, making it the basic building block of all human life. There are trillions of cells in a human being, and they determine the structure and function of each person.Full Answer >
The normal human colon is about 5 feet long. Its main purpose is to hold and dry out waste material produced by digestion. The gut flora in the colon break down materials that remain unabsorbed.Full Answer >