Is there ultraviolet rays from the sun in the polar regions?
yes, since one can get a sunburn even there
Yes, since UV rays are a component of sunlight.
Yes, in fact the relative UV content is higher although I don't know why.
Yes, and that is where ozone holes are. They WERE shrinking.
Of course there are. WHERE you see the Sun has nothing to do with what it is emitting.
I can fly...!
Yes, anywhere the sun shines (that means the entire planet), there are ultraviolet rays, and a sunburn and/or skin cancer risk.
Roger the Mole
Yes, more than elsewhere when the sun is up.