Mayan has to be it
That's all I can think of
Answer: The densest layer is the solid metal inner core,
Explanation:
The inner core is a hot, dense ball of (mostly) iron. It has a radius of about 1,220 kilometres (758 miles). ... The inner core's intense pressure—the entire rest of the planet and its atmosphere—prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.
Answer:
In the feudalism system, knights were included in vassal.
Answer:
Land pollution can occur due to poor handling of hazardous materials, unintended accidents, and even acts of nature such as floods and hurricanes. Contaminated sites in urban and rural areas contribute to the contamination of various landscapes, as does poor management of soil.