The rhinoceros iguana, which lives on the island of Hispaniola, lays up to 20 eggs in a burrow. While studying an iguana colony,
naturalists found 12 eggs in the first burrow, 6 eggs in the second burrow, 11 eggs in the third burrow and 20 eggs in the fourth burrow. what is the difference between the eggs in the last burrow and the eggs in the first burrow?
