The light comes in at an angle and turns upside down. Our eyes do the same thing but our brains are smart enough for it to turn the image again.
Organization of Petrochemical Exporting Countries
They began to form by a combination of volcanic activity and the deposit of marine sediments. It formed along northwest Africa about 530 million years ago. ... As the Appalachian Mountains eroded, sand and clay were deposited over Florida's limestone layer.
