Total natural gas rig count in the US (including conventional gas drilling) Shale gas is natural gas that is found trapped within shale formations. Shale gas has become an increasingly important source of natural gas in the United States since the start of this century, and interest has spread to potential gas shales in the rest of the world.
A stressor is a chemical or biological agent, environmental condition, external stimulus or an event that causes stress to an organism.[1]
One of the difficulties in studying psychology as a science is that psychologists use everyday language in very specific ways. The word stress is a good example. Stress researchers define stressors as things that happen that require the utilization of resources. Good things â having a baby, getting a new job, or winning an award - can be stressors. Obviously, bad things can be stressors as well. We feel distress when the resources demanded of us outstrip the resources we have.