| 1 | Some bees go out foraging, but one stands by the entrance to the nest. | |
| 2 | Think about an animal. It has to get food, but at the same time it has to protect itself from predators. | |
| 3 | The division of labor between men and women - men gather 68 percent of the calories in foraging societies - requires cooperation between the sexes. | |
| 4 | "Whales, on the other hand, often feed at depth, " says Roman. "So they feed low in the water column. | |
| 5 | The truth was that polar bears are ferocious wild animals and can become desperate for food in the ice-free summer months. |
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