Question

Biomes are classified:

Answer 1

bi·ome
ˈbīˌōm/
nounECOLOGY
plural noun: biomes
a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.

Answer 2

"a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra."
Hope That Helps!
(Ps: That isn't my definition, it's google's)