It can thin out the ozone layer
An example of a social norm is that most people expect a 15 per cent tip.
<h3>What is a Social Norm?</h3>
Social norms refers to shared standards of acceptable behavior by groups.
Social norms can occur both in formal and informal settings that govern the behavior of members of a society.
Norms become social when they are accepted by a large number of people in a society.
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Answer:
A population-D
Explanation:
A population is referred to a large collection of individuals or objects that is the main focus of an experiment or scientific research query. It is also called A research population because it considers a defined collection of individuals or objects who have similar binding characteristics.
Professor DeVries randomly selected and interviewed 50 of the school's students of Oakbridge School. He is using a well defined collection of student with same characteristic ie same school . His study is using a Population. Note that "random" here implies a subset of a population.
Feudalism was essentially a monarchy. It had social classes. It replaced the old courts of a land with ones controlled by the king.