✅ D. Energy from sources replenished naturally on human timescales
a: Energy only from oil | b: Energy only from coal | c: Energy from burning peat only | d: Energy from sources replenished naturally on human timescales Read more
✅ C. Carbon dioxide
a: Neon | b: Argon | c: Carbon dioxide | d: Helium Read more
✅ B. Using efficient appliances and switching off unused devices
a: Blocking ventilation filters | b: Using efficient appliances and switching off unused devices | c: Leaving every light on | d: Opening a refrigerator door for long periods Read more
✅ B. Total greenhouse-gas emissions associated with an activity or entity
a: A shoe mark in soil | b: Total greenhouse-gas emissions associated with an activity or entity | c: A tree's height | d: The weight of coal only Read more
✅ B. Ocean absorption of excess atmospheric carbon dioxide
a: Extra oxygen dissolving | b: Ocean absorption of excess atmospheric carbon dioxide | c: Sand movement only | d: Moonlight Read more
✅ 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
✅ A. Troposphere
a: Troposphere | b: Thermosphere | c: Mesosphere | d: Exosphere 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
✅ 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. Organisms interacting with each other and their physical environment
a: A mineral deposit | b: A weather instrument | c: Only a single animal | d: Organisms interacting with each other and their physical environment 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
✅ 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
✅ D. Controlled decomposition of organic material
a: Mining coal | b: Burning plastic | c: Distilling seawater only | d: Controlled decomposition of organic material Read more
✅ D. Paris Agreement
a: Ramsar Convention | b: Montreal Protocol only | c: Basel Convention | d: Paris Agreement 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
✅ B. Processes materials so they can be used again
a: Creates new raw materials from nothing | b: Processes materials so they can be used again | c: Prevents all waste automatically | d: Always turns waste into fuel Read more
✅ D. Energy from sources replenished naturally on human timescales
a: Energy only from oil | b: Energy only from coal | c: Energy from burning peat only | d: Energy from sources replenished naturally on human timescales 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
✅ B. The clearing or removal of forests
a: Cleaning a river | b: The clearing or removal of forests | c: Recycling glass | d: Planting a forest Read more