Question 1
When did the human population reach 500 million people?
◦ 400 years ago
◦ 1,000 years ago
◦ 4,000 years ago
◦ 10,000 years ago
Question 2
When was the Neolithic Period?
◦ 10,000 to 5,000 years ago
◦ 40,000 to 10,000 years ago
◦ 80,000 to 60,000 years ago
◦ 100,000 to 70,000 years ago