They can constrict or dilate because their walls are muscular.
Answer:
but which one are you referring to
Explanation:
True, sleep problems indeed are a quite often occurence among children as well as adults - they do occur quite often but don't necessarily occur all the time for people to whom it does happen. At the same time, when someone suffers from sleep problems, this doesn't necessarily mean that he cannot sleep at all.
In considering NBAC’s analytic approach, an otherwise competent person who is acutely ill might be considered at especially high risk of harm for situational cognitive vulnerability.
This type of vulnerability refers to the person who is otherwise doing a great job, but is currently in a bad situation that is preventing them from demonstrating their full capacity. This is why they are at a risk of suffering from this.
