Earth Systems & Resources
Which of these absorbs harmful UV radiation from the sun?
Carbon dioxide.
Methane.
Ozone.
Nitric Oxide.
What human activity contributes to acid rain formation?
Recycling waste
Deforestation
Burning fossil fuels
Photosynthesis
What impact do chlorofluorocarbons (CFCs) have on stratospheric ozone depletion and related surface-level UV exposure effects on ecosystems?
Increased UV radiation enhances photosynthesis increasing global plant biomass.
Reduced stratospheric temperatures mitigate climate change impacts on polar ecosystems.
Increased UV radiation harms phytoplankton populations critical for marine food webs.
Reduced surface-level UV radiation leads to lower vitamin D synthesis in animal populations.
Which atmospheric phenomenon occurs where warm air rises at the equator, cools as it moves towards the poles, then sinks back towards earth as cold air?
Coriolis effect
Hadley cells
Polar cells
Jet streams
Which process releases nitrogen into the atmosphere?
Photosynthesis.
Denitrification.
Evaporation.
Combustion.
Which layer of the atmosphere has a temperature decrease as the altitude increases and is closest to the Earth?
Thermosphere.
Mesosphere.
Stratosphere.
Troposphere.
Which process in the water cycle involves solar energy heating the surface of bodies of water, resulting in the evaporation of water into the atmosphere?
Precipitation
Infiltration
Evaporation
Condensation

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Given the increase of carbon dioxide in the atmosphere, which policy would most effectively mitigate climate change by promoting carbon sequestration in forest ecosystems?
Mandating the use of biofuels in transportation without establishing sustainable agriculture practices.
Subsidizing fossil fuel consumption to lower energy costs and promote economic growth.
Reducing funding for public transportation to encourage the use of personal electric vehicles.
Implementing a cap-and-trade system for carbon emissions to incentivize reforestation projects.
Which agricultural practice contributes most directly to loss of genetic diversity within crop species?
Crop rotation involving multiple different crop species
Utilizing organic fertilizers instead of synthetic ones on crop fields
Planting monocultures year after year on the same land
Integrating pest management strategies that minimize pesticide use
What process describes movement heat from sun through space until it reaches earth?
Convection
Radiation