Out of Africa Theory

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Across
  1. 2. The discovery of Lucy in Ethiopia is the first evidence of humans living in _____ (page 7).
  2. 4. Scientists believe modern humans evolved from ___ living in African 140 0000 to 200 000 years ago (page 9).
  3. 6. In 1978, scientists found evidence of ____ in volcanic ashes 3.6 million years old in Tanzania (page 8).
  4. 7. The skeleton of _____ discovered in east Africa is 3.2 million years old (page 7).
  5. 9. The Olduvai Gorge is part of the _______ in East Africa, where many archeological discovers about the first humans have been made (page 6).
Down
  1. 1. Scientists use carbon dating to determine the age of ______ (page 7) .
  2. 3. A group of people dispersed around the world.
  3. 5. On page 5, there are images of ____ distort the size, distance, and area of Africa.
  4. 8. DNA evidence suggests all human lineage can be traced back to 'Mitochondrial ___' (page 9).
  5. 10. With 40% of the skeleton intact, Lucy is the oldest and most complete human ____ found in Africa (page 7).