The prehistoric man (and woman) had big nasal cavities; meaning they had a high sense of smell. They also used their teeth to tear into flesh and sharpen their tools they had made from wood and stone; some of which are sharper than the ones we have today.
Romans did perspective paintings.
Greece was more on objects then on walls or canvas.
Greeks were very quadrangular and blocky. But had lots of shapes.
<span>More Natural and pictures/ paintings were based on what they saw with there eyes.
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With human scultures of the human body they were very similar.
Romans was a little finer like on the edges and more tools and that they could work with.
Greeks were a little rougher but still quiet amazing.
The last one is the answer hope that helps