It might be dangerous because everyone breathes the same air. Peoples body’s can be weaker to others and could get sick if no fresh air is coming threw the class.
For example if adding 9 + 9 you would take whatever needed from the second number to fill the first number (In this case being one, to have 10 + 8) and replace the 0 with the second number (In this case being 18)
D, a storm forced him to North Africa.
For hours at a time Raphael would stand quietly beside the old man as he worked, noting each detail of the potter's skill, and storing up in his little head the things he learned there.
