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1
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- G - 3
- FOREST & RAIN FOREST
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2
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3
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- Support complex ecosystem
- Need about 30 inches of rain a yr
- Half of original forest
has been destroyed
- Only about 30%
of the land
surface is covered by
forests
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4
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- Categorized by how
often they lose their
leaves -
- Deciduous - lose leaves during winter season
- Evergreen - shed and replace leaves while
remaining green
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5
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- Categorized by how
the temperature
region they are
located in and
by what types
of trees are
found in
- broadleaf deciduous forest
- coniferous evergreen forest
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6
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7
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8
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9
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10
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11
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12
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- Mainly found near
the equator
- home to about 50%
of all plant
and animal species
- 80 - 400 inches of rain
per year
- occur between the
tropic of Cancer and
the tropic of Capricorn
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13
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14
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- The tropical rainforest is earth's most complex biome in terms of both
structure and species diversity. It occurs under optimal growing
conditions: abundant precipitation and year round warmth.
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15
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- Similar to rain
forest but occur
in regions where
rainfall is more
seasonal
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16
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17
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18
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- North America - most trees are
broadleaf with 2 to 3 species such as maple, beech & ash often dominating the
forest
- home to flying and climbing animals - birds, squirrels, raccoons
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19
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20
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21
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- Northwest coast of
US
- Oregon, Washington
- mild winters - heavy
rainfall
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22
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23
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24
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- Needle leaf evergreens - high
altitude forests
- made up of
spruce and fir -
animals include
rabbit, wolves, deer & moose - insects abound
in summer
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25
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- Economic -
- half is burned as
fuel
- the rest used
mostly as lumber
- 200 million tons per/yr turned into
pulp for paper
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26
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- Rubber -
- Dyes -
- Oils -
- Foods & medicines - 40% of drugs
come from plants
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27
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- Recycle oxygen, nitrogen & carbon dioxide
- cool area
- anchor topsoil
- recycle earth’s water
supply -
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28
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- Being replaced by cropland & pasture
- erosion accelerates as
land is cleared
- each minute - 27 acres - size of 20 football fields is lost
- size of the state of Delaware cleared /mo
- pollution - acid rain
- cook food / heat homes in developing countries
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29
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- Better land use
practices
- Education
- Wiser planning
- Much could be
lost in the
next 50 years
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30
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