Answer:
nervousness.
Explanation:
The answer is "nervousness".
Though Bella is studying hard and is studying diligently for the last two months for the exam, Bella is not confident on herself that she remembers everything what she have studied and is nervous.
Bella is under confident that she will forget everything in the exam hall once she starts writing the paper. She also dreams of it. In her dream, Bella also sometimes forgets the way to school.
All these shows that Bella is very nervous for the exam that she is going to give, although she is preparing hard for it.
Thus the answer is "nervousness".
The Columbian Exchange has brought new species to Europe. This includes new plant species, such as tomatoes and potatoes which have help combat hunger in Europe. This can be seen for example through the fact that when potato has a blight it caused the great famine in Ireland. However, the Columbian Exchange was not only positive for Europe as it also introduced sicknesses such as syphilis.
Answer:
Aileen must form an explanation if she hasn't already done the hypothesis,
By causing an increase in the industries