He studied the fossils' age and how tall the mountains are. He also studied how old they are. I don't know about Coal Beds but he also used balloons to find out the continents were once a big supercontinent called Pangaea and they apparantly drifted apart
Mother: Mary Wollstonecraft
Father: William Godwin
Hope this helps! ;)
The carbon cycle and oxygen cycle is mainly maitained by the plants animals. ... In photosythesis, carbon dioxide is utilised from the atmosphere and oxygen is released from the water by the process of photolysis of water. In respiration carbon dioxide and water is released from the product of photosynthesis and/or glucose.