What is accurate about the scientific results learned by counting tree rings? study of tree rings and associated geology shows that the earth is 12,000 years old, but no older. study of tree rings and associated geology shows that the earth is exactly 12,429 years old. study of tree rings by themselves shows that the earth is 4.6 billion years old. study of tree rings and associated geology shows that the earth is more than 12,429 years old. study of tree rings and associated geology proves that the earth is 5,000 years old, but no older.