It is true that the famous Mount St. Helens is located in the United States, in Skamania County, Washington, to be more precise.
Do you mean what caused it? or what the after affects where?
The ocean, atmosphere, cryosphere, and biosphere interact with the geosphere via the earth's crust.
Atmospheres are layers of gas that surround planets and other celestial bodies. Earth's atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases. 1: the total mass of air surrounding the earth. 2: Gas surrounding celestial bodies (planets, etc.) The atmosphere of Mars is mainly composed of carbon dioxide. 3: air of a place. 4: Ambient influence or set of conditions An atmosphere of excitement.
The atmosphere is defined as the region of air and gas surrounding an object in space, such as a star or planet, or the air around any location. An example of the atmosphere is the ozone and other layers that make up the Earth's sky as we see it. An example of an atmosphere is the air and gases contained in a greenhouse.
Learn more about the atmosphere here
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