Answer:
They elected as the first professor to occupy that chair George Wythe, styled by Jefferson as the American Aristides.
But it's a Mission so I would say 1 at least
I'm not sure what question 4 is. If you could add both the picture and the question, that would be great.
There are multiple possible answers. One is that it's mouse droppings since mice like to eat it. Another is that it's bugs and this is dangerous since they can leave larva there. The third is that they are remaining residue traces from other types of oats that were ground together and in this case it is not that dangerous.