what is one example of how humans impact global warming? responses contour plowing by farmers increases the level of rain water run-off. contour plowing by farmers increases the level of rain water run-off. burning coal and oil increases the level of carbon dioxide in the atmosphere. burning coal and oil increases the level of carbon dioxide in the atmosphere. the use of copper wire in power transformers increases the speed of the electrical currents. the use of copper wire in power transformers increases the speed of the electrical currents. heat emitted from factories, automobiles, and buildings increases the average global temperature.
