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Answer: Paris Agreement
The Paris Agreement (2015) replaced the Kyoto Protocol, with all nations submitting Nationally Determined Contributions (NDCs).
Answer: True
La Niña, characterized by cooler Pacific waters, often strengthens the Indian monsoon, while El Niño tends to weaken it.
Answer: Energy (Electricity and Heat Production)
Burning fossil fuels for electricity and heat accounts for the largest share of global GHG emissions, primarily CO2.
Answer: Removed
Net zero means any emissions are balanced by absorption/removal, often through forests, carbon capture, or other sinks.
Answer: Enhancing energy efficiency through the National Mission for Enhanced Energy Efficiency
NAPCC includes eight missions; NMEEE aims to reduce energy intensity of the economy through market-based mechanisms.
Answer: True
CO2 dissolves in seawater forming carbonic acid, lowering pH and threatening marine organisms with calcium carbonate shells.
Answer: Melting of Arctic sea ice reducing albedo
As ice melts, darker ocean water absorbs more solar radiation, causing further warming—a positive feedback loop.
Answer: World Meteorological Organization
IPCC assesses scientific information on climate change and provides policymakers with regular assessments to inform climate policy.
Answer: True
Carbon footprint measures emissions of CO2 and other GHGs associated with activities, helping assess environmental impact.
Answer: Rising sea levels due to thermal expansion and ice melt
Warming oceans expand and melting glaciers/ice sheets add water, causing sea levels to rise and threaten coastal areas.
Answer: E. coli
E. coli is used as an indicator because its presence suggests recent fecal contamination and potential presence of other pathogens.
Answer: False
Ground-level ozone is a harmful pollutant causing respiratory problems; stratospheric ozone protects against UV radiation.
Answer: Carbon dioxide
CO2 traps heat radiated from Earth's surface, preventing it from escaping into space, thus warming the atmosphere.
Answer: Magnification
Biomagnification causes toxins like DDT or mercury to increase in concentration as they move up the food chain, affecting top predators most.
Answer: Burning of biomass fuels for cooking
Use of firewood, dung cakes, and crop residues in traditional chulhas releases harmful pollutants like carbon monoxide and particulate matter indoors.
Answer: True
PM10 can penetrate the respiratory system; finer PM2.5 particles can enter the bloodstream, causing serious health issues.
Answer: Cadmium
Itai-Itai disease, first identified in Japan, is caused by cadmium poisoning from contaminated water, leading to severe bone and kidney damage.
Answer: 6
India's AQI has six categories: Good, Satisfactory, Moderately polluted, Poor, Very Poor, and Severe, based on pollutant concentrations.
Answer: True
Warmer water holds less dissolved oxygen; thermal discharge from industries can stress or kill fish and other aquatic organisms.
Answer: Nitrogen oxides and volatile organic compounds
Photochemical smog forms when sunlight triggers reactions between NOx and VOCs, producing ozone and other secondary pollutants.