The first revelation Muhammad show people how to is to read.
For most years they had a magnificent harvest of cereal (barley and emmer wheat,wich could be used to make bread,cakes and beer );vegetables
These norms are called Display Rules. These rules are social rules that inform about when, where and how a person can express their emotions. They are told to be rules that are supposed to be explained to every individual as he is growing. This is expressed by the way people interact and socialize with other people.
Answer: The correct answer is : B. Laboratory experiments do not generally reflect real-life circumstances.
Explanation: One of the advantages of laboratory experiments is that cause-effect relationships are easier to consider. In a laboratory the independent variables are manipulated by the experimenters.