The answer is B - Current Y has a greater potential difference, and the charges flow at a slower rate.
I just took the quiz
Well, the density of the water is
so i believe that is what the question is asking for :)
Electromagnetic waves do not require a medium to travel through. They can travel through empty space or matter.
Based on the description, it will be most likely that he believes in Oscillating model (also known as Cyclic model) of the universe
Based on this model, the gravitational force will prevent further expansion by pulling back the matters and undergo a bounce
hope this helps
The answer is A. Human Society.