Answer:
feudal system. ... In a feudal system, a peasant or worker known as a vassal received a piece of land in return for serving a lord or king, especially during times of war.
Explanation:
Vassals were expected to perform various duties in exchange for their own fiefs, or areas of land.
Answer:
An observational study.
Explanation:
Observational studies are those studies in which the researchers note the effects of risks factor, diagnostic test, or treatment without interrupting in it by changing anything. It is an investigative study that aims at distinguishing the effects caused by the treatment.
<u>In the given case, the researcher has used the observational study method to identify the effects of exercise on reducing the cholesterol level. He divided the people into two groups with 50 each. The research was performed without an awareness of these people as well as the technician measuring the cholesterol level. Thus it exemplifies an observational study</u>.
So, the correct answer is the observational study.
Every marine is expected to show competence, courage, and resolution during combat. This is further explained below.
<h3>What is a
marine?</h3>
Generally, A member of land or sea-trained military units, such as the Royal Marines or the Marine Corps.
In conclusion, Every marine must demonstrate expertise, bravery, and wheel torque in battle.
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To generate natural energy that's cheaper and more reliable
Answer:
Explanation:
Free market system: A free market is an economic system that allows supply and demand to regulate prices, wages, etc, rather than government.
