The slopes of most cinder cones are usually about 30 degrees because that is the angle of repose, which is the slope at which the loose cinder can stand in equilibrium.
The cinder cones vary significantly in height, from just a few meters of height to few hundred meters.
They are numerous around any volcano, and lava can come out of them or may flow below them.
<h2>Answer: Oil </h2>
Oil is the main resource that Persia (Iran) has and until 2006 it was estimated that it was the fourth largest producer of oil in the world.
Taking into account that the world is still very dependent on this fossil fuel, it makes this resource of great importance for this region in its relationship with neighboring countries.
Answer choices B, C, and , D are correct.
Child mortality rate is the rate of infants or young children who die in a certain area.
Answer:
The philosophy drove 19th-century U.S. territorial expansion and was used to justify the forced removal of Native Americans and other groups from their homes. The rapid expansion of the United States intensified the issue of slavery as new states were added to the Union, leading to the outbreak of the Civil War.
