Aquatic & Terrestrial Pollution
Which agency is primarily responsible for enforcing federal environmental laws like those that regulate pollutant emissions into the atmosphere?
Occupational Safety & Health Administration (OSHA)
United States Geological Survey (USGS)
Department of Energy (DOE)
U.S. Environmental Protection Agency (EPA)
In designing an investigation to test the effects of a new pesticide on multiple trophic levels within an aquatic ecosystem, which would serve as the most comprehensive indicator of overall ecosystem health?
Fluctuations in dissolved oxygen levels within the water column.
Variations in water pH level due to byproducts from agricultural runoff.
The growth rate of algae at the base of the food web.
Changes in populations across different trophic levels, such as phytoplankton, zooplankton, and fish.
What is a potential long-term consequence of bioaccumulation in higher trophic level marine organisms like tuna?
Improved immune response against ocean pollutants over successive generations.
Decreased levels of toxins through natural selection for toxin-resistant individuals.
Enhanced growth rates due to additional nutrient absorption from smaller fish.
Increased concentration of toxins such as mercury that can affect human health when consumed.
Which approach could assist small-scale farmers struggling with soil degradation due poor practices enhance long-term agricultural productivity ensuring food security for growing populations ?
Rely exclusively organic fertilizers replenish nutrients , overlooking possible limitations cost effectiveness scale implementation issues faced some producers regions ..
Adopt agroforestry systems integrating nitrogen-fixing trees crop rotation diversification improve fertility while sustaining yields .
Extend irrigation networks regardless impact on local water availability exacerbating scarcity conflicts among users downstream .
Modify tilling techniques maintain current monoculture operations , leading potential loss biodiversity over time .
Considering global waste management practices, what is a possible long-term consequence for regions primarily relying on landfilling for solid waste disposal?
Enhanced nutrient cycling within ecosystems adjacent to landfill sites
Increased air pollution through widespread adoption of incineration methods
Reduced marine pollution as waste is confined inland away from bodies of water
Groundwater contamination due to leachate percolation
Which law was enacted to control the pollution of U.S. waters by oil spills and other contaminants?
Toxic Substances Control Act
Oil Pollution Act
Federal Insecticide, Fungicide, and Rodenticide Act
National Environmental Policy Act
What is the characteristic feature of point source pollution?
Dispersal
Plume
Runoff
Diffusion

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What is a potential long-term impact on marine ecosystems if there's an increase in oceanic dead zones due to agricultural runoff?
Elevated nutrient concentration may lead to rapid growth and proliferation of coral reefs.
Enhanced fishery stocks due to reduced competition for resources among surviving species.
Decreased biodiversity as hypoxic conditions cause die-offs of sensitive marine species.
Increased carbon sequestration as algae blooms die and sink to the ocean floor.
In what way does electronic waste (e-waste) disposal pose challenges for both developed and developing countries?
Incineration in developed countries reduces waste volume but releases hazardous air pollutants.
Landfills in developed countries release toxic substances that can leach into the environment and harm local ecosystems.
Informal recycling in developing countries sheds light on unregulated practices and the worker health and environmental risks.
Recycling in developed countries preserves resources and allows for possible export of toxic materials to developing nations.
Which gas is predominantly produced by both natural processes such as anaerobic decomposition in wetlands, and human activities like rice cultivation and cattle farming contributing significantly to greenhouse gas emissions?
Sulfur hexafluoride (SF6)
Nitrous oxide (N20)
Carbon dioxide (CO2)
Methane (CH4)