✅ A. The variety of living organisms in an area or on Earth
a: The variety of living organisms in an area or on Earth | b: A type of fossil fuel | c: The amount of traffic only | d: The height of a mountain Read more
✅ B. Breakdown of larger plastic items and synthetic fibres
a: Only fresh snow | b: Breakdown of larger plastic items and synthetic fibres | c: Only volcanic ash | d: Only untreated timber Read more
✅ C. Carbon dioxide
a: Neon | b: Argon | c: Carbon dioxide | d: Helium Read more
✅ A. An area of land draining to a common outlet
a: An area of land draining to a common outlet | b: A sea current | c: A weather satellite | d: A water bottle Read more
✅ B. Absorbing much of the Sun's harmful ultraviolet radiation
a: Creating all rainfall | b: Absorbing much of the Sun's harmful ultraviolet radiation | c: Producing Earth's gravity | d: Blocking all visible light Read more
✅ B. Meeting present needs without undermining future generations' ability to meet theirs
a: Banning all technology | b: Meeting present needs without undermining future generations' ability to meet theirs | c: Using every resource as quickly as possible | d: Ignoring environmental impacts Read more
✅ D. Carbon dioxide
a: Neon | b: Argon | c: Helium | d: Carbon dioxide Read more
✅ B. An area where water covers or saturates the soil for part or all of the year
a: A dry dune | b: An area where water covers or saturates the soil for part or all of the year | c: A volcanic crater only | d: A glacier peak Read more
✅ A. Land degradation in dry areas
a: Land degradation in dry areas | b: A type of rainfall | c: Ocean tides | d: A desert becoming a city overnight Read more
✅ C. Keep products and materials in use and reduce waste
a: Maximize single-use products | b: Stop all repair | c: Keep products and materials in use and reduce waste | d: Increase landfill only Read more
✅ D. A species facing a high risk of extinction
a: A species with no habitat needs | b: A nonliving resource | c: A species found everywhere | d: A species facing a high risk of extinction Read more
✅ C. Maintaining plant cover and reducing erosion
a: Overgrazing slopes | b: Burning topsoil | c: Maintaining plant cover and reducing erosion | d: Removing all vegetation Read more
✅ C. Total greenhouse-gas emissions associated with an activity or entity
a: A tree's height | b: The weight of coal only | c: Total greenhouse-gas emissions associated with an activity or entity | d: A shoe mark in soil Read more
✅ B. Establishing forest on land not recently forested
a: Draining wetlands | b: Establishing forest on land not recently forested | c: Building roads | d: Removing trees Read more
✅ C. Using efficient appliances and switching off unused devices
a: Leaving every light on | b: Opening a refrigerator door for long periods | c: Using efficient appliances and switching off unused devices | d: Blocking ventilation filters Read more
✅ D. Intergovernmental Panel on Climate Change
a: International Olympic Committee | b: International Court of Justice | c: World Trade Organization | d: Intergovernmental Panel on Climate Change Read more
✅ C. A non-native organism that spreads and causes or is likely to cause harm
a: Every native species | b: A species that cannot reproduce | c: A non-native organism that spreads and causes or is likely to cause harm | d: A fossil Read more
✅ D. Ocean absorption of excess atmospheric carbon dioxide
a: Sand movement only | b: Extra oxygen dissolving | c: Moonlight | d: Ocean absorption of excess atmospheric carbon dioxide Read more
✅ D. Troposphere
a: Thermosphere | b: Mesosphere | c: Exosphere | d: Troposphere Read more
✅ B. Breakdown of larger plastic items and synthetic fibres
a: Only fresh snow | b: Breakdown of larger plastic items and synthetic fibres | c: Only volcanic ash | d: Only untreated timber Read more