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