-- theory of uniformitarianism -- earth shaped by observable processes (e.g. erosion by wind and water) working over long periods of time -- questions "young earth" and "catastrophism."
(earth shaped by observable processes (e.g. erosion by wind and water); working; T:over long periods of time)
earth shaped by observable processes (e.g. erosion by wind and water)
working
T:over long periods of time