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Transcript 
Heterogeneous
distribution of life.
Tundra
Northern Boreal Forest
Temperate
Forest
Desert
Savanna
Tropical
Rain
Forest
Tropical
Dry Forest
Chaparral
Temperate
Grassland
OBSERVATIONS:
Biosphere: all living organisms of earth.
Hydrosphere:
the waters
(oceans, rivers,
1.
There is alllife
on earth,
i.e.,
lakes) of the earth.
Atmosphere: gases surrounding the earth.
Lithosphere: crust/rocks of the earth.
Ecosphere: the living organisms and the nonliving
environment with which they interact.
there is a Biosphere
2. Heterogeneous distribution of
life.
Tropical forests, grasslands, deserts,
tundra, etc.
Vegetation zones
Biomes
Tundra
Possible explanations for the heterogeneous
Northern Boreal Forest
distribution of living organisms:
1)
Temperate
Very
diverse
Forest
environmental (climate)
conditions at different regions of the earth.
Desert
On this basis the distribution of living
organisms isSavanna
organized in different
biomes.
Tropical
Rain
different
Forest regions
Tropical
Dry Forest
2) The
of the planet have a
diverse and separate history.
On this basis the distribution
of living
Chaparral
organisms
is organized in different
Temperate
Grassland
realms
.
If the heterogeneous distribution of
living organisms across the planet is
determined chiefly by climate than
climate must also be distinct at
different localities of the earth.
Can we explain why climate is not
everywhere the same?
https://www.youtube.com/watch?v=
RS0Q3WIdosE
Ambient temperature (1 m above ground under thermo hut)
determined by re-radiation of infrared light (heat) from the
surface of the earth.
Differences in solar energy input
drive global temperature patterns.
What does the model predict?
What does the model NOT
explain?
Variations in solar energy input drive
global patterns of precipitation.
Falling air or high
pressure at 30 latitude.
Rising air or low pressure
at the equator.
Descending air warms,
carries more water and
dries the environment.
Deserts
It will rain:
1. Areas of permanent low
pressure (equatorial
doldrums).
2. When a cold and warm front
collide.
3. When air crosses a mountain
range.
Q1. During a transatlantic flight
you travel through the
a.
b.
c.
d.
e.
Mesosphere.
Stratosphere.
Troposphere.
Lithosphere.
Ecosphere.
Q2. The realm that comprises
Asia SOUTH of the Himalayan
mountains is called _________.
Q3. The Nearctic comprises
___________.
Q4. On what basis are animals
and plants grouped in a
particular biome?
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