The Atlantic Ocean.
No
no, unless you travel below Texas to Europe.
no you can't - you would have to cross the Atlantic Ocean at some point
You would not cross the equator, as Europe is east of North America. The equator is a degree of latitude, which means you must go either north or south to cross it. Regardless, you would be traveling well above the equator.
around a 7 - 11 days
There are 5,389 miles between England and Mexico. You would not be able to travel in a car since you have to cross the Atlantic Ocean.
you would cross mexico to get to south america.
The Atlantic Ocean (shortest distance- east) Going west you'd have to cross the Pacific Ocean and Asia.
The Pacific Ocean
You would cross the Indian Ocean.
If you mean Plymouth in England, then it is already in Europe. From mainland Europe you would travel across the English Channel to get to it. For Plymouth in America you could travel by boat or fly.
Polar Bears are already in North America. There are no polar bears at the Antarctic. If they crossed the equator they would probably go into South America, Africa, or Australia. And I think that the answer would be no its too far for them to travel.