What is the status of environmental problems in western europe? they are decreasing. they are increasing. they are not a concern. there has been no change since the industrial revolution.

I think they are decreasing. because energy production/acid rain, nuclear power/waste, air pollution/climate, heavy metals, pesticides, water pollution, solid waste, and unforeseen accidents. Many environmental problems are common to most European countries

Geologists use  seismic waves to  locate an earthquake's epicenter.. 

It is c. naturally in the environment