Black holes themselves can not be seen, nor do they leave trails (since emptiness does not have to be caused by a black hole), but there is evidence for black holes: scientists can see the effects of their gravity on nearby stars. The answer is B.
Answer:
C.
Explanation:
Galen was an ancient Greek doctor who was very much famous for medicine
Answer:
Prepare food, matainsacred fire and the weaving of garments for emperor and ritual use
Explanation:
Constants are kept the same in experiments :)
He believed in 2 things which might help you. I don't really know what term you are looking for, but here are the two things he brought to the table.
1. He was very concerned about states rights believing that the states should have the balance of power shifted to them.
2. He believed that domestic policy had to be addressed rather than war and terrorism which is what Bush emphasized.
He was accused of being more of a socialist than a federalist (which might even be true). You could call him a social democrat.