Title: Adolescence.
Question: What are two potential reasons that adolescents in different cultures spend varying time on work and leisure activities?

Title: Biodiversity.
Question: What describes habitat destruction, overkill, introduced species, and secondary extinctions?

Title: Hellenistic period.
Question: When was the Battle of Mantinea?

Title: Palermo.
Question:
What did the Arabs introduce that continues to be relevant to Palermo's culture today?