What features of Cro-Magnon people differentiate them from Neanderthal people

What features of Cro-Magnon people differentiate them from Neanderthal people

Question
75-100 words each…please cite sources

1)What features of Cro-Magnon people differentiate them from Neanderthal people?
2)What physical properties of chert and flint render these rocks useful in the manufacture of spear points, axes and scrapers by early humans?
3)Early arboreal primates such as Notharctus have close-set eyes and grasping hands. What functions might these attributes have provided?
4)Why is it easier to find and date fossils in the eastern African fossil sites than in many other parts of the world?