A since they must have evolved for a common ancestor or they would have different bone structure
Greenland is part of North America, but Greenland is politically associated with Denmark/Norway.
About every 2 million years
Answer: second choice.
I am hoping that this is the right answer.
Climate, I think.
Costa Rica has billboards all over Canada (where I live) that advertise Costa Rica. Come to think of it, I haven't seen one of those in a while, but I'm sure I did. Our winters are horrible, cold and (this year) very long.
The air masses that would be associated with cold, wet conditions would have to be A and D.
Hope this helps!!
