The three US states
that extend west longitude 120 degrees are Oregon, Washington and California.
<span>Oregon: it</span> is a state in the Pacific Northwest region on the West coast of
the United States.
<span>Washington: it</span> is also a state in the Pacific Northwest region of the United
States. The name of the State was after George Washington who was the first
President of the United States.
<span>California: it is the most populous and western state in the United
States, it is </span><span>the
third most widespread state by area. </span>
<span>The answer is the option C. Altitudinal zonation. Altitudinal zonation is a graph or drawing showing the natural features of ecosystems of mountains at different heights. Several factors affect the ecosystems. On of the most basic and most used is the temperature. The infamous scientist Alexander Von Humbold was first in using the relationship between temperature and the altitude in a mountain in relation with the vegetation. Other factors related with the altitude and the ecosystems are solar radiation, soil composition and humidity.</span>
The asthenosphere and the lithosphere are parts of the Earth's geosphere. The correct answer is A.
