Why Are Native Trees More Diverse in North America Than

question 39

Multiple Choice

Why are native trees more diverse in North America than in Europe?

• A)The larger ice sheets in North America caused more species to go extinct.
• B)North American trees expanded into mountain ranges during glaciations.
• C)European trees were trapped between the ice sheet and E-W trending mountain ranges.
• D)North American trees are all of tropical origin.

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