Answer: Farming, Plowing, wind, and water
Step-by-step explanation:
When we are looking at the landscapes by Juan O'Groman's Sand Mines of Tetalpa we can see that the land is transformed in many ways.
There are three ways of transformation that are considering plowing, wind or water, and farming. Those things can be seen in the evidence of land shape and form in his paintings. Some are considering the man's work and some of them are caused by the weather.