185
TROPICAL GRASSLAND
▲Tropical regions that are not within the
zone of heavy rainfall are too hot and dry to
support dense forest. They are seas of grass,
often known as savannas, sometimes dotted
with trees that can withstand long droughts.TEMPERATE GRASSLAND
▲Some temperate areas get little rainfall, usually
because they lie at the hearts of great continents.
Too dry for trees, they are naturally grassy steppes
and prairies – although many are now farmland.BOREAL FOREST ▲
To the south of the Arctic tundra, the northern
continents support a band of dense forest. Most of
the trees are conifers with stiff needle-like leaves
that can survive the long, freezing winters.Climate zones
▼The climate zones of the world form bands, with
tropical rainforest near the Equator, most deserts in
the subtropics, and boreal forest in the far north.
Grasslands develop where it is too dry for trees.POLAR AND TUNDRA
BOREAL FOREST
MOUNTAIN
TEMPERATE FOREST
MEDITERRANEAN
DESERT
TEMPERATE GRASSLAND
TROPICAL GRASSLAND
TROPICAL RAINFOREST
184_185_ClimateZones.indd 185 03/01/19 12:10 PM