✅ 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
✅ C. Organisms interacting with each other and their physical environment
a: A weather instrument | b: Only a single animal | c: Organisms interacting with each other and their physical environment | d: A mineral deposit 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
✅ C. Controlled decomposition of organic material
a: Burning plastic | b: Distilling seawater only | c: Controlled decomposition of organic material | d: Mining coal 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
✅ D. Paris Agreement
a: Montreal Protocol only | b: Basel Convention | c: Ramsar Convention | d: Paris Agreement Read more
✅ D. Carbon dioxide
a: Neon | b: Argon | c: Helium | d: Carbon dioxide Read more
✅ C. Processes materials so they can be used again
a: Creates new raw materials from nothing | b: Always turns waste into fuel | c: Processes materials so they can be used again | d: Prevents all waste automatically 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. 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
✅ 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
✅ 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. 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. Carbon dioxide
a: Neon | b: Argon | c: Helium | d: Carbon dioxide 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
✅ D. Troposphere
a: Thermosphere | b: Mesosphere | c: Exosphere | d: Troposphere Read more
✅ B. The variety of living organisms in an area or on Earth
a: The height of a mountain | b: The variety of living organisms in an area or on Earth | c: The amount of traffic only | d: A type of fossil fuel Read more
✅ C. An area where water covers or saturates the soil for part or all of the year
a: A glacier peak | b: A volcanic crater only | c: An area where water covers or saturates the soil for part or all of the year | d: A dry dune Read more
✅ C. Organisms interacting with each other and their physical environment
a: A weather instrument | b: Only a single animal | c: Organisms interacting with each other and their physical environment | d: A mineral deposit Read more
✅ B. Absorbing much of the Sun's harmful ultraviolet radiation
a: Blocking all visible light | b: Absorbing much of the Sun's harmful ultraviolet radiation | c: Producing Earth's gravity | d: Creating all rainfall Read more