About 1.6 million years ago, the world began to experience ice ages. In response to these changes, early humans migrated from Africa to Asia and eventually to India, China, Southeast Asia, and Europe. They had to adapt to their new environment.
The reason why we have evidence of hunter-gatherers (h-g) and their lifeways are: <span>Archeology and paleobiology
Through paleobiology, we managed to study several existing fossils, which became the evidence of hunter-gatherers' existence and through Archeology, we could know their lifestyle from the tools and buildings that they left.</span>
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Answer:
Explanation:
Because everyone understood that the mass of the earth exerted a force on the apple. It was what the apple did that was astonishing. The force between the apple and the earth implied that the apple exerted a force on the earth! We still have trouble with that idea.
Also who would have thought that sunlight was a composite of all colors. Who could ever imagine that white light has green or blue in it. Those three colors are so different.