3. compare and contrast neanderthals, cro-magnon
humans, and early humans.

Cro-Magnons were straight limbed and tall  compared to Neanderthals  and early humans.

Explanation:

Neanderthals are more primitive but stronger. They were stockier, with shorter limbs and a larger chest and nose. The head is much longer with more pronounced facial front.

Cro-Magnons are robustly built and powerful. The body was generally heavy and solid, with strong musculature. The forehead was straight and face was short and wide.

Early humans were small in size. They had long arms and short legs. They required larger digestive tract because of their plant based diet.