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D199 WGU EXAM/60 COMPLETE QUESTIONS AND ANSWERS
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- D199 WGU EXAM/60 COMPLETE QUESTIONS AND ANSWERS
D199 WGU EXAM/60 COMPLETE QUESTIONS AND ANSWERS
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D199 WGU EXAM/60 COMPLETEQUESTIONS AND ANSWERS
in the last 10,000 years: - -humans began modifying the land surface for
growing food with advent of agricultural revolution
-the agricultural revolution roughly - -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 - -INDUSTRIAL
REVOLUTION when climate pollution began to increase dramatically
-the industrial revolution was powered by - -fossil fuels
-what began after world war II? - -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
-The Great Acceleration marks the beginning of - -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. - -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? - --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 - --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
-black carbon aerosols (a major component of soot) - --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 - --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 - -the ocean's influence
-At current emission growth levels—that is, under a "business as usual"
scenario - --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 - --which means a time
when environmental change is driven by human activity
-One result of the Anthropocene Era is the increase in the greenhouse effect,
which might be better termed the "atmospheric blanket."
-vidence that human activity is the primary cause of global warming
includes - -physical and satellite observations and the confirmation of the
predictions of scientific models.
-How are satellites and weather balloons used with climate change model
data? - -to confirm predictions
-Why is global cooperation necessary to reduce the effects of increased
carbon dioxide in the atmosphere? - -Gases travel quickly through the
atmosphere to all parts of the globe.
-Which phrase describes a change that would reduce the climate effects of
methane? - -Increase in sustainable agriculture
-The CDM has two primary goals: - -1) to promote sustainable development
in Global South countries
2) to allow industrialized countries to earn emissions credits from their
investments in emission-reducing projects in the South.
Created by Kyoto Protocol
-Devised by the World Bank, it is slated to be a key component of any post-
Kyoto climate treaty - --Reducing emissions from deforestation and
degradation (REDD) is another offsetting mechanism
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