<span>The threat to internal validity is the Mortality. Internal
validity is the measure in which the causality of the stimuli studied
is analyzed, that is, if the results of the study are due to the
interaction of the variables analyzed or are due to the interaction with
other variables. <span>Mortality is an error that occurs if the
conclusions of the study are made only on the basis of the participants
who were from beginning to end in the investigation, without taking into
account those who left the study.
I hope my answer can help you.
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Answer:
so basically I think this person failed once but is saying that he shouldent be afraid to put all his hard work again because be has done this before and will do it better than before because he has experience.
Answer:
esta subregión limita al norte con África del Norte al este con África Central y al sur y oeste con Océano Atlántico
