Estimated Human Population 10% 10 10 10% 10 10 5x10 4x10 10 2x10 10 107 10 -10000 -8000 -6000 -4000 -2000 Year (Common Era) Note that, on this graph, the X-axis utilizes a linear year 6000 BCE, human population (shown by the circle) first reached 10' = 10,000,000 = 10 million people. What was the human population in 0 CE/BCE? O2x10 = 200 million O 1x10 = 100 million O 3x10 = 300 million What was the human population in 4000 BCE? O 5x107 = 50 million O 1.5x10' = 15 million O 10x10 = 100 million 2000 scale, while the Y-axis utilizes a logarithmic scale. For example, around the