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to O
them O
. O
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Such O
a O
slight O
change O
in O
the O
thermohaline B-climate-nature
circulation I-climate-nature
does O
not O
have O
any O
significant O
impact O
on O
the O
heat O
balance O
of O
the O
northern O
high O
latitudes O
between O
126 O
and O
115 O
kyr O
BP O
. O
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Great O
Lakes B-climate-nature
are O
facing O
an O
elevated O
nutrients B-climate-problem-origins
discharges B-climate-problem-origins
from O
agricultural B-climate-assets
watersheds B-climate-nature
that O
could O
lead O
to O
the O
lakes B-climate-hazards
impairment I-climate-hazards
. O
Non B-climate-hazards
- I-climate-hazards
point I-climate-hazards
source I-climate-hazards
( O
NPS B-climate-hazards
) O
pollution B-climate-hazards
is O
the O
leading O
contributor O
of O
the O
lakes B-climate-hazards
impairment I-climate-hazards
. O
Policy O
makers O
are O
required O
to O
establish O
guidelines O
and O
polices O
that O
governs O
and O
distribute O
agri O
- O
environmental O
funds O
to O
minimize O
the O
agricultural B-climate-hazards
NPS I-climate-hazards
pollutions I-climate-hazards