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WGU D199 OA EXAM 2024 ACTUAL EXAM 2
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WGU D199 OA EXAM 2024 ACTUAL EXAM 2
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WGU D199 OA EXAM 2024 ACTUAL EXAM 2 VERSION(VERSION A AND B) COMPLETE 450 QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) /ALREADY GRADED A+
in the last 10,000 years: - ANSWER: humans began modifying the land surface for
growing food with advent of agricultural revolution
the agricultural revolution roughly - ANSWER: 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 - ANSWER: INDUSTRIAL
REVOLUTION when climate pollution began to increase dramatically
the industrial revolution was powered by - ANSWER: fossil fuels
what began after world war II? - ANSWER: 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 - ANSWER: 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. - ANSWER: 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? - ANSWER: -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 - ANSWER: -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) - ANSWER: -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 - ANSWER: -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 - ANSWER: the ocean's influence
At current emission growth levels—that is, under a "business as usual" scenario -
ANSWER: -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 - ANSWER: -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 -
ANSWER: 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? -
ANSWER: to confirm predictions
Why is global cooperation necessary to reduce the effects of increased carbon
dioxide in the atmosphere? - ANSWER: 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?
- ANSWER: Increase in sustainable agriculture
The CDM has two primary goals: - ANSWER: 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 - ANSWER: -Reducing emissions from deforestation and degradation
(REDD) is another offsetting mechanism
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