What environmental and/or cognitive skills do you think separated early Homo species from the earlier hominids from whom they were descended?

INSTRUCTIONS: Please write a 1 page paper (approximately 350 words) explaining your answer. If you use any outside sources, PLEASE CITE your sources. You may write in “first person” (using terms like “I am,” “I think”, “I believe”). Grading will be based on your depth of thought, spelling and grammar, SO PLEASE SPELL CHECK AND PROOFREAD.