Biomes
world climate
Earth tilt
on axis
23.5 degrees
controls seasons
Atmospheric distribution
air spreads toward equator
part flows to the poles
rainfall/weather affected
continental climate #
desert island 🏝
extreme dry
no fresh water
mountainous 🏔
one side rainfalls
rain shadow affect 
oceanic heat distribution
air clockwise in northern 🔃
air counter clockwise southern 🔄
trade winds push warmer currents
continental drift
present
latitude determine climate #
different position alter climate
if moved new oceanic circulation pattern #
past
Cambrian period
life all aquatic 🌊
Eurasia
Gondwanaland
South America
Africa
Australia
Antarctica
middle/late Paleozoic era
life moving to land
Laurasia
Pangaea
Mesozoic Era
Pangaea seperation
Tethys Sea
Current world biomes
moist temperate
temperate rain forrest
rain reliably present
brief summer dryness
giant long lived conifers
Drier montane/ subalpine forests
rain shadow affect ⛰
mixed conifer forest
soil shallow and rocky
acidic
temperate deciduous forest
cold winter/warm summers
high percipitation
tall broadleaf deciduous trees
southeastern evergreen forest
warmer winters
soil sandy and porous ⏳
longleaf pine
dry temperate
grasslands
flat with low rolling hills
drier climate
rich soil
shrublands and woodlands
trees/shrubs widely spaced
savanna
is grass grows between trees
high clay content
mild winter/hot summer
desert
driest region
can be cold or hot
rocky and thin soil
alpine tundra
highest point where trees live on mountains
cold most of year
short growing season
thin soil
polar
artic tundra
dry areas
low precipitation
permafrost ❄
short growing season
soil high clay
boreal coniferous forest
taiga
broad band of forest
coniferous
tropical
tropical rainforest
high precipitation 💦
high temperatures ♨
angiosperms
tropical grasslands/savanna
lower rainfall