The history of human evolution has been reconstructed solely with the help of the fossilized human bones discovered so far. An animals body dispersed. They gradually get buried in the soil. Over a period of thousands of years, the minerals in the soil get deposited inside the pores of these bones are left behind. These are actually Rock in the shape of bones. Such rock as known as rhe 'fossils'.
Characteristics of the structure of the body..
The structure of the human body is different from that of other vertebrate animals in certain aspects. These differences set man apart from the other vertebrates this most important of these characteristics are as follows...
1. Human could stand upright. It enabled them to walk on two feet, it becomes possible for them to use their two forelimbs as hands. The structure of human hands came to be different from that of the forelimbs of other animals.
2. Humans have opposable thumb. That is they can move their thumb against the other four fingers of the hand. It allows them to have a firm and flexible grip on various objects in various ways. It enables them ro perform various tasks that require manual skills, which other animals could not do. They could make various tools and other articles hence, humans are known as,'makers'of devices, tools and implements......
3. The muscles of the human face are such that it can express their feelings.
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