Answer:
The natural barrier
Explanation:
If this is not a choice i did it so i could ace my math test to get sdome free answers. Just copying the guy above me.
Answer:
<u>c. Laboratory experiments have a high degree of control and may create an artificial atmosphere.</u>
Explanation:
A limitation of laboratory experiments is that the environment in which the experiments take place, is very much calculated and controled. This means that it is artificial, and this wll affect the generalization of the findings considering a not cotroling environment such as a real environment.
Answer:Id
Explanation:
Id is part our personality system that is more demanding and want to fulfill our desires at any cost. It has no sense of considering other people's needs or how they will feel when we do certain things , it only considers us and no one else. It can't wait, it requires that we fulfil our desires right there and then. This is why a four year old is impatient to wait for his turn to play with toys but he would rather grab them because the id tells him not to wait for his gratification but take it now.
D. It did not allow for a centralized government
Newspapers ,radios and television
