APS126 Directed reading 0.0 / 5 ? BiologyanimalsUniversityNone Created by: SarahCreated on: 15-05-17 11:46 4231 Across 1. what trigger cooperators to punsih free riders even though its costly? (8, 8) Down 2. who provided the defintion of tool use? (8, 4) 3. what did beck use to clarify the boundaries of his definition? (9, 5) 4. what are more used than tools? (10, 9)
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