Why isecology not limited only to the forces of nature?

Ecology isnot limited to the forces of nature as it gradually gets modified byhuman actions. Many seemingly natural features and phenomenaassociated with the environment are the caused by human activities.For example, the change in climate because of global warming seems tobe a natural process, but is an outcome of the human activities. Theconservation of soil and water, usage of pesticide, and otherman-made materials in agriculture are other examples of humantransformation of nature. Artificial environment is prominentlyvisible in cities in the form of built environment made fromconcrete, cement, brick, stone, glass and tar.