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.
Peer pressure. For other uses, see Peer pressure (disambiguation). Peer pressure (or social pressure) is direct influence on people by peers, or an individual who gets encouraged to follow their peers by changing their attitudes, values, or behaviors to conform to those of the influencing group or individual.