The plant life in a region. The peculiar species composition of a particular region. SOIL Finely divided rock, mixed with animal and vegetable matter, and living organisms. The major types of communities and ecosystems that are typical of broad geographic systems. Biomes are usually named for the predominant vegetation, but have distinctive animals, fungi, and bacteria as well.
Examples are snowfall, tree death, wind, landslides, floods.
There is little, if any, undisturbed vegetation anywhere.