The Primary Difference Between Tundra and Boreal Forest Is That

Multiple Choice

The primary difference between tundra and boreal forest is that

A) the tundra generally lacks permafrost.
B) trees are the dominant vegetation in boreal forests but not in tundra.
C) nearly all tundra areas are very dry, whereas boreal forests are wet.
D) herds of caribou and musk oxen live in boreal forests but not in tundra.