A) Agriculture B) Deforestation C) Transportation D) Industrial processes
A) Chlorofluorocarbons B) Methane C) Nitrous oxide D) Carbon dioxide
A) By reflecting sunlight away from Earth B) By reducing the Earth's magnetic field C) By trapping heat in the atmosphere D) By causing the ozone layer to thicken
A) Methane B) Chlorofluorocarbons C) Carbon dioxide D) Nitrogen oxide
A) Recycling B) Burning of fossil fuels C) Reducing meat consumption D) Building wind turbines
A) The formation of clouds in the sky B) The process by which greenhouse gases trap heat in Earth's atmosphere C) The cooling effect caused by green rooftops D) The process of plants absorbing carbon dioxide
A) Burning fossil fuels B) Agricultural practices C) Wetlands D) Industrial processes
A) Higher levels of oxygen B) Global warming C) Increased ozone depletion D) Cooling of the Earth's surface
A) It creates a cooling effect in the upper atmosphere B) It amplifies the warming effect of other greenhouse gases C) It prevents the penetration of harmful UV rays D) It absorbs excess heat from the atmosphere
A) 25 °C (77 °F) B) -18 °C (0 °F) C) 5 °C (41 °F) D) 15 °C (59 °F)
A) 0.1±0.05 °C per year B) 1.0±0.2 °C per decade C) 0.5±0.1 °C per year D) 0.27±0.1 °C per decade
A) Methane B) Water vapor C) Ozone D) Carbon dioxide
A) 100% B) 25% C) Over 50% D) 75%
A) 50 years B) 5 years C) 12 years D) 100 years
A) Over the last decade B) In the last five years C) During the past century D) Since the Industrial Revolution
A) Carbon dioxide emissions B) Ozone depletion C) Methane emissions D) Nitrous oxide emissions
A) 70.0±7.0 Gt CO2e B) 30.0±3.0 Gt CO2e C) 53.6±5.2 Gt CO2e D) 40.5±4.5 Gt CO2e
A) Surpass 2.0 °C (3.6 °F) between 2040 and 2070 B) Reach exactly 2.0 °C (3.6 °F) by 2050 C) Decrease to pre-industrial levels D) Stay below 1.5 °C (2.7 °F)
A) 'Dangerous' B) 'Safe and sustainable' C) 'Negligible impact' D) 'Desirable for economic growth'
A) Methane B) Nitrous oxide C) Carbon dioxide D) Argon
A) 120 ppm. B) 50 ppm. C) 30 ppm. D) 90 ppm.
A) Atmospheric Chemistry Observational Databases. B) Oceanic Carbon Dioxide Archive. C) Solar Radiation Data Center. D) Global Temperature Records Database.
A) 80% B) The first 10% C) 50% D) 100%
A) A few years. B) Tens of minutes. C) Centuries to millennia. D) Decades.
A) Orbiting Carbon Observatory B) Manometry C) Infrared analyzing D) DIAL
A) 2000 B) 1750 C) 1990 D) 1980
A) Orbiting Carbon Observatory B) Range-resolved infrared differential absorption lidar (DIAL) C) Manometry D) Infrared analyzing
A) IPCC B) UNFCCC C) NOAA D) NASA
A) 1800 B) 1850 C) 1750 D) 1900
A) Respiration B) Photosynthesis C) Combustion D) Decomposition
A) 44% B) 11% C) 22% D) 33%
A) Carbon dioxide B) Synthetic halocarbons C) Methane D) Nitrous oxide
A) Rice paddies B) Soybean plantations C) Wheat fields D) Corn farms
A) Guy Stewart Callendar B) Nils Gustaf Ekholm C) John Tyndall D) Svante Arrhenius
A) Biochar B) Carbon dioxide air capture C) Geologic storage D) Atmospheric methane removal
A) Mars B) Venus C) Titan D) Earth |