As Jerry says, nice quiz as usual! One suggestion: if the answers are sorted alphabetically, this can be used as a hint for when you're left with the ones you're finding hardest
What are you talking about? You're comment is not very clear. Are you trying to say that an example of a mountain are the Andes? If so you are wrong. The Andes are a mountain range. Consisting of mountains. Whose names are often shortened to Mount ________.
The question "Separating the Americas between Europe and Africa" makes no sense. Surely this should read "Separating the Americas from Europe and Africa"?