Earthquake data provided courtesy University of Utah. Yellowstone is one of the most seismically active areas in the United States. Approximately 1,000 to 3,000 earthquakes occur each year in the Yellowstone area; most are not felt. They result from the enormous number of faults associated with the volcano.
What are the effects of environmental pressure on natural selection? A: Environmental pressure is another term for natural selection, a process that encourages some genes to survive because they are conducive to the environment while others die. This process slowly causes a distinct species to evolve over time. Continue Reading.
Full Definition of PRESSURE. 1. a: the burden of physical or mental distress b: the constraint of circumstance: the weight of social or economic imposition. 2. : the application of force to something by something else in direct contact with it: compression. 3. archaic: impression, stamp.4.edical Definition of PRESSURE. 1. : the burden of mental or physical distress especially from grief, illness, or adversity. 2. : the application of force to something by something else in direct contact with it: compression. 3.