Man-made environmental anomaly refers to a phenomenon in which one or more environmental elements of the natural environment have changed significantly due to human behavior within a certain geographic area, which disrupts the relative balance of the ecosystem.
According to the above definition, which of the followings is human-made environmental abnormaly?
The ground subsidence occurred in a certain place due to an earthquake. After a heavy rain, some areas were seriously flooded, which causes the crops in the farmland and the fruit trees in the orchards to suffer from root decay and wither in these areas.