Answer: In Medieval Europe, knights pledged loyalty to vassals, who in turn pledged theirs to powerful lords, and serfs labored in the fields.
Explanation:
A rigid hierarchy refers to one where people who are born into a certain position in life, find it quite hard to move from it or rather one where there are different social classes and people had to be classified in one class for the system to work.
The system during medieval times was much like this. Social classes existed that determined a person's worth in society such as the knights, vassals, Lords and Royals. There was also the serfs who were considered the lowest in the hierarchy.
In fact, since the Moon is constantly rotating on it's own axis, there is no area of the planetoid which is permanent darkness, and the far side of the Moon is only completely devoid of sunlight during a Full Moon - when the Sun is facing the Moon with the Earth in between.
The term in the column 1 that match to the column 2 are as follows:-
- Ice sheet - Size of a continent
- Erratic - Boulder or rock dropped by glaciers
- Deforestation - Increases erosion
- Glacier - Carves away the land
<h3>What is Deforestation?</h3>
Deforestation refers to the cutting down of the trees in the large quantity, which can lead to the environmental issues such as erosion of soil, flooding, loss of habitats etc. It leads to the increase in the level of the erosion as the soil loses it holds.
Ice sheet is a continental glacier in the polar region of the earth which contains 99% of the freshwater.
Erratic refers to a rock or boulder that stands out from the surrounding rocks and is said to have been transported there by glaciers.
Glacier are collection of the ice, rock and other sediments carves away the land.
Learn more about Deforestation here:
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De = -2 , ef = -4 , df = -6
