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Chapter 27 (tundra (grasslands, forests, tropical rain forests),…
Chapter 27
tundra
grasslands
forests
tropical rain forests
continental drift
cooling and warming
rain shadow
decreased rain on mountains
savanna
grass between the trees
biomes
many ecosystems covering earth
gondwanaland
giant continent
pangaea
one supercontinent
laurasia
new continent
Tethys sea
new waterway
evergreen forest
warmer winters
grassland
Canadian border
woodland
trees are widely spaced
deserts
less than 25 cm/ year of rain
