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.
Nitrogen (78%) and oxygen (21%). Define atmospheric pressure. The pressure exerted on a surface by the atmosphere due to the weight of the column of air directly above that surface. Simply put, atmospheric pressure is the weight of air above. Name the two lowest layers of the atmosphere. 1. troposphere.