22. Global Distribution of Vegetation 18,000 years ago conifers tundra taiga grassland woodland Biomes Through Time
23. Global Distribution of Vegetation 6,000 years ago taiga temperate deciduous woods & scrub conifers grassland desert tundra cold deciduous Biomes Through Time
24. Biomes Through Time Global Distribution of Vegetation - Present taiga tundra temperate deciduous grassland cold deciduous tropical R.F. warm mix