D199 WGU Question and answers verified to pass D199 WGU
in the last 10,000 years: - correct answer humans began modifying the land surface for growing food with advent of agricultural revolution
the agricultural revolution roughly - correct answer coincides with a warm interglacial peri...
D199 WGU
in the last 10,000 years: - correct answer ✔humans began modifying the
land surface for growing food with advent of agricultural revolution
the agricultural revolution roughly - correct 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 - correct answer
✔INDUSTRIAL REVOLUTION when climate pollution began to increase
dramatically
the industrial revolution was powered by - correct answer ✔fossil fuels
what began after world war II? - correct 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 - correct 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. - correct 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? - correct 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 - correct 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) - correct 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 - correct 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 - correct answer ✔the ocean's influence
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