1) There are pictures of reconstructed skulls and what the species may have look
ID: 134275 • Letter: 1
Question
1) There are pictures of reconstructed skulls and what the species may have looked like. Since the fossils and remains are only fragments, how does this get done? What does the process consist of? ( Explain in 4 to 5 sentences)
2) Why did we evolve towards bipedalism? We evolved from ancestors that were quadrupedal, what was the change that made us eventually evolve? Did the environment make a difference? (Explain in 4 to 5 sentences)
3) How things like weight and other outward appearances can be determined by fossils? ( Explain in 4 to 5 sentences)
Explanation / Answer
1) Fossils can be obtained with complete skeleton or with some bones missing. If the complete bones are found then the process is easier. Because in case of missing bones, the missing bones are reconstructed by using the skeleton structure in close relatives. Then the bones are arranged in their appropiate position using computer simulations or other methods to obtain a natural posture of the oraganism. The muscles are constructing in the similar way of missing bones, by analysing muscles in the close relatives. In addition to that, the position and size of the muscle can be obtained from the fossils, as the muscle leave scars and bumps in the bones. Rare fossil impression can give details of skin texture. The color is mostly based on the environment in which the organism lived, as they camouflaged.
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