Answer:
Attention and working memory are both key to learning new information. Attention allows information to be taken in. Working memory helps the brain make sense of it.
Explanation:
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Stress is "your body´s way of responding to any kind of demand". It might be cause by good or bad experiences. it might be caused for many reasons: physical reason such as fear, or emotional like family or job. So it could be said that a person height might not influence stress because it has to do with something biological, a human conditions and not an external factor. <span />
Vitamin K, I believe anyway I may be wrong.