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lack O
of O
oxygen O
in O
the O
rooting O
zone O
. O
Transpiration B-climate-nature
was O
about O
10–20 O
% O
larger O
for O
broadleaf B-climate-organisms
trees I-climate-organisms
( O
birch B-climate-organisms
, O
aspen B-climate-organisms
) O
than O
for O
spruce B-climate-organisms
trees I-climate-organisms
. O
-DOCSTART- -X- O O 9fd1e4a13963002b632c9fd0cfe9659f
We O
construct O
a O
model O
accounting O
for O
pollution B-climate-hazards
damages B-climate-impacts
and O
the O
option O
to O
use O
a O
depletable O
and O
a O
renewable B-climate-mitigations
energy I-climate-mitigations
resource O
in O
production O
. O
We O
start O
by O
setting O
up O
an O
economy O
including O
for O
pollution B-climate-hazards
and O
the O
key O
distinguishing O
factors O
between O
depletable O
and O
renewable B-climate-mitigations
resources I-climate-mitigations
. O
It O
will O
be O
key O
not O
to O
solely O
rely O
on O
changes O
in O
the O
energy B-climate-mitigations
mix I-climate-mitigations
but O
to O
move O
to O
an O
economy O
that O
can O
substitute O