To fill in the question marks in the table regarding the migration of Homo sapiens, we can consider the established timeline of human migrations:
- 200,000 years ago: Homo sapiens appear in Africa.
- 40,000 years ago: They arrive in Europe.
- 20,000–60,000 years ago: They migrate from Africa to Asia.
- 15,000 years ago: They arrive in the Americas.
Given this sequence, the appropriate replacements for the question marks are:
- For the event that took place 20,000–60,000 years ago, the migration is characterized by arriving in Asia.
- For the event that occurred 15,000 years ago, the migration is characterized by arriving in the Americas.
Thus, the correct response is: arrive in Asia; arrive in the Americas.