Scientists have observed thousands of female leatherback turtles during egg laying. Every female leatherback exhibits the same remarkable behavior. When she first comes up on the beach to lay her eggs, she digs a deep hole, lays her eggs in the hole, and covers the eggs with sand. She then travels about 100 meters away from the first hole and digs another. She doesn't lay any eggs in this hole, but goes through the same process of covering the hole just as if there had been eggs present. Write a hypothesis to explain why the female leatherback digs two holes.
