D199 WGU EXAM/90 COMPLETE QUESTIONS AND ANSWERS LATEST VERSION CPOMPLETE DOCUMENT FOR STUDY
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D199 WGU EXAM LATEST VERSION
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D199 WGU EXAM LATEST VERSION
D199 WGU EXAM/90 COMPLETE
QUESTIONS AND ANSWERS LATEST
VERSION CPOMPLETE
DOCUMENT FOR STUDYD199 WGU EXAM/90 COMPLETE
QUESTIONS AND ANSWERS LATEST
VERSION CPOMPLETE
DOCUMENT FOR STUDYD199 WGU EXAM/90 COMPLETE
QUESTIONS AND ANSWERS LATEST
VERSION CPOMPLETE
DOCUMENT FOR STUDYD199 ...
D199 WGU EXAM/90 COMPLETE
QUESTIONS AND ANSWERS LATEST
VERSION 2024 -2025 CPOMPLETE
DOCUMENT FOR STUDY
in the last 10,000 years:
ANSWERS humans began modifying the land surface for
growing food with advent of agricultural revolution
the agricultural revolution roughly
ANSWERS coincides with a warm interglacial period that began
about 11,700 years ago which is called the HOLOCENE era
(warm stable climate)
the last 270 years of the holocene ushered into the
ANSWERS INDUSTRIAL REVOLUTION when climate pollution
began to increase dramatically
the industrial revolution was powered by
ANSWERS fossil fuels
what began after world war II?
ANSWERS the great acceleration (1950-present)
-caused depletion in the ozone layer
-After 1950, the biodiversity of species started decreasing and
the extinction of species accelerated
, 2
The Great Acceleration marks the beginning of
ANSWERS Homo sapiens' truly massive global imprint on the
planet
-The climate has already warmed by 1°C since 1900.
-If humans continue with business-as-usual consumption of
fossil fuels, the warming between 1900 and 2100 could exceed
4°C.
the greenhouse effect.
ANSWERS It is this trapping of heat energy that otherwise
would have escaped to space through the atmosphere
-allows solar radiation to enter
-the blanket effect
is the greenhouse effect real?
ANSWERS -Satellites routinely measure the incoming solar
energy and the outgoing heat energy from the planet
-Independently, the heat energy emitted by the surface has
been estimated using observed surface temperatures on land
and sea.
aerosols
ANSWERS -Visible smoke and smog are made up of tiny
particles
-carbon dioxide and other greenhouse gases cannot be seen by
the human eye
-Most of these aerosols reflect sunlight and have a cooling
effect
, 3
black carbon aerosols (a major component of soot)
ANSWERS -absorb solar radiation entering the atmosphere and
have a warming effect.
-warms the climate by absorbing solar energy rather than
infrared energy from the planet
super pollutants
ANSWERS -non-carbon dioxide greenhouse gases and black
carbon particles
-per molecule, their warming effects are much larger than that
of carbon dioxide.
The Northern Hemisphere has warmed more than the
Southern Hemisphere, largely because
ANSWERS the ocean's influence
At current emission growth levels—that is, under a "business
as usual" scenario
ANSWERS -another trillion tons of carbon dioxide will be added
to the atmosphere by about 2030
-At that point, the rate of climate change will be three times
faster than the pace experienced until now.
-unchecked emissions will lead to warming that could exceed
4°C
Earth is now experiencing the Anthropocene Era
ANSWERS -which means a time when environmental change is
driven by human activity
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