Q1. Modern humans also known as ______ have walked the planet for about 300,000 years. A: (b) Homo sapiens. Q2. The concept of “millennium” refers to a period of: A:
Q1. Modern humans also known as ______ have walked the planet for about 300,000 years. A: (b) Homo sapiens. Q2. The concept of “millennium” refers to a period of: A: