What are the causes and effects of increasing marginal

What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?

Then write 1-2 paragraphs describing one individual you believe has made a significant contribution to florida and united states history. in your response, explain why this individual's contribution was significant.

The map shows information about river valley civilizations. which feature of this map best the reader determine the distance between two places?