Question: The Black Mountains are named for the spruce-fir forest in the southern Appalachian Mountains that are an eco region of what sort of biome?
Sentence (from "Black Mountains (North Carolina)"): The range takes its name from the dark appearance of the red spruce and Fraser fir trees that form a spruce-fir forest on the upper slopes which contrasts with the brown (during winter) or lighter green (during the growing season) appearance of the deciduous trees at lower elevations.
Relevant evidence: Yes