A long, steep slop, especially one at the edge of a plateau or separating areas of land at different heights.
ep·och - noun
a period of time in history or a person's life, typically one marked by notable events or particular characteristics.
"the Victorian epoch"
Cambodia, the Mekong and the Tonle Sap dominate the life and economy of Cambodia
The Earth's geosphere is made up of iron, oxygen, magnesium, and silicon. All of these elements are chalcogens, or chemical elements.
