Climate activism in depth

• A. Nitrogen (N2)
• B. Carbon dioxide (CO2) ✓
• C. Oxygen (O2)
• D. Argon (Ar)

Why: Carbon dioxide is released when fossil fuels such as coal, oil, and natural gas are burned. It persists in the atmosphere for centuries, trapping outgoing infrared radiation and driving most of the warming associated with human activity. Nitrogen, oxygen, and argon are not greenhouse gases in any meaningful sense because their molecules do not efficiently absorb infrared radiation.

• A. The cooling of Earth's surface by reflected sunlight from clouds
• B. The trapping of heat in the lower atmosphere by gases that absorb and re-emit infrared radiation ✓
• C. The depletion of the ozone layer by chlorine compounds
• D. The movement of ocean currents that redistribute heat across the globe

Why: The greenhouse effect occurs when gases such as water vapor, carbon dioxide, and methane absorb infrared radiation emitted from Earth's surface and re-emit it in all directions, including back toward the surface. This natural process keeps the planet habitable; without it, average surface temperatures would be far colder. Enhancing the concentration of these gases intensifies the effect.

• A. Sunspot activity has been increasing steadily since 1950
• B. Volcanic eruptions have become more frequent
• C. The stratosphere is cooling while the lower atmosphere is warming, consistent with greenhouse gas forcing ✓
• D. Earth's orbit has moved closer to the Sun

Why: If the Sun were the main driver, the whole atmosphere would warm together. Instead, the lower atmosphere (troposphere) is warming while the stratosphere is cooling, a fingerprint pattern expected from greenhouse gases trapping heat near the surface. Solar output has not increased over the relevant period, volcanic activity does not add net warming on long timescales, and Earth's orbital changes are too slow to explain recent warming.

• A. About 0.1 degrees Celsius
• B. About 0.5 degrees Celsius
• C. About 1.1 to 1.3 degrees Celsius ✓
• D. About 5 degrees Celsius

Why: Assessments by the Intergovernmental Panel on Climate Change (IPCC) place global surface warming at roughly 1.1 to 1.3 degrees Celsius above pre-industrial levels as of the most recent assessments. This figure is a multi-year average, and the rise reflects a steady trend driven largely by greenhouse gas emissions, with individual years varying around it.

• A. They have no significant effect on global temperature
• B. They absorb most of the excess heat and a large share of emitted carbon dioxide, moderating atmospheric change ✓
• C. They generate all of the atmospheric oxygen used in respiration
• D. They reflect nearly all incoming solar radiation back to space

Why: The oceans have absorbed more than 90 percent of the excess heat trapped by greenhouse gases and roughly a quarter of the carbon dioxide humans emit. This buffering slows atmospheric warming but causes ocean warming, sea level rise through thermal expansion, and ocean acidification as CO2 dissolves into seawater.

• A. The Kyoto Protocol
• B. The United Nations Framework Convention on Climate Change (UNFCCC) ✓
• C. The Paris Agreement
• D. The Montreal Protocol

Why: The UNFCCC was adopted at the Earth Summit in Rio de Janeiro in 1992. It created the framework for global climate cooperation and the COP meetings. The Kyoto Protocol (1997) and Paris Agreement (2015) were later instruments built under this framework, while the Montreal Protocol addressed ozone-depleting substances.

• A. Rachel Carson
• B. Al Gore
• C. James Hansen ✓
• D. Svante Arrhenius

Why: NASA climate scientist James Hansen testified before a U.S. Senate committee in June 1988, stating that global warming was underway and that human activity was a major cause. The hearing received wide media coverage and is often cited as a turning point in public awareness. Rachel Carson wrote about pesticides, Svante Arrhenius made early CO2 warming calculations in 1896, and Al Gore later became a prominent advocate.

• A. To ban the use of fossil fuels entirely by 2000
• B. To set legally binding emissions reduction targets for developed countries ✓
• C. To provide funding for renewable energy in developing nations only
• D. To establish a global carbon tax

Why: The Kyoto Protocol committed industrialized countries to legally binding greenhouse gas emission reduction targets, averaging about 5% below 1990 levels during the first commitment period (2008–2012). It did not ban fossil fuels or impose a global carbon tax, and it placed binding obligations primarily on developed nations.

• A. Extinction Rebellion
• B. Sunrise Movement
• C. Fridays for Future ✓
• D. 350.org

Why: Fridays for Future began when Greta Thunberg started skipping school to protest outside the Swedish parliament in August 2018. The movement spread worldwide, with millions of students joining climate strikes. Extinction Rebellion is a separate civil disobedience group, Sunrise Movement focuses on U.S. policy, and 350.org is an international campaign organization.

• A. The Earth Summit in Rio de Janeiro
• B. The First World Climate Conference in Geneva ✓
• C. The Copenhagen Summit
• D. The Stockholm Conference on the Human Environment

Why: The First World Climate Conference, held in Geneva in 1979 and organized by the World Meteorological Organization, brought scientists and governments together to address climate change as a global issue. The Stockholm Conference (1972) focused on the broader human environment, the Earth Summit came in 1992, and the Copenhagen Summit took place in 2009.

• A. Launching a national media blitz
• B. Identifying and listening to the concerns of people in your community ✓
• C. Recruiting a large budget from corporate donors
• D. Drafting federal legislation

Why: Grassroots organizing is built on local relationships. Understanding what community members care about, such as flooding, air quality, or energy costs, lets organizers frame climate issues in terms that motivate real participation.

• A. Constructing physical community centers
• B. Developing a stable group of committed members who can be mobilized repeatedly ✓
• C. Raising the largest possible one-time donation
• D. Hiring professional lobbyists

Why: Base building focuses on cultivating committed, long-term participants. A reliable base gives a campaign the capacity to sustain pressure, turn out people for events, and win over time.

• A. Keeping all meetings closed to new members
• B. Holding one-on-one conversations to recruit and develop leaders ✓
• C. Avoiding contact with local officials
• D. Publishing only anonymous online posts

Why: One-on-one conversations, sometimes called relational organizing, build trust and identify potential leaders. They help move people from passive sympathy to active participation.

• A. Winnable goals are required by law
• B. Early wins build momentum and show members that their efforts make a difference ✓
• C. Vague goals attract more funding
• D. Specific goals prevent any community involvement

Why: Small, achievable victories, such as getting a local council to pass a resolution or stopping a specific polluting project, demonstrate impact. This builds confidence and keeps volunteers engaged for the longer fight.

• A. To calculate the energy use of a community building
• B. To identify who holds decision-making influence over an issue and how to pressure them ✓
• C. To measure electricity generated by local solar panels
• D. To rank volunteers by their physical strength

Why: A power analysis maps decision-makers, allies, and opponents. Knowing who can actually change a policy allows organizers to target their efforts strategically rather than spreading resources thin.

• A. Directly generating electricity from renewable sources
• B. Influencing government decisions and laws to address climate change ✓
• C. Selling carbon credits to private companies
• D. Conducting scientific research on atmospheric chemistry

Why: Policy advocacy aims to shape laws, regulations, and government decisions so that climate goals are pursued through public institutions.

• A. Organizing mass street protests against fossil fuel companies
• B. Communicating with lawmakers or officials to persuade them to support or oppose specific policies ✓
• C. Publishing peer-reviewed studies on global temperature trends
• D. Donating money to charitable environmental causes

Why: Lobbying involves direct engagement with policymakers, such as legislators and regulators, to advocate for particular policy outcomes.

• A. Issuing sovereign bonds
• B. Coordinated letter-writing and petition campaigns ✓
• C. Filing patent applications for clean technology
• D. Negotiating private supply contracts with utilities

Why: Petitions, letter-writing campaigns, and public mobilization signal constituent support to elected officials and can shift political priorities.

• A. Subsidize the purchase of electric vehicles
• B. Put a price on carbon emissions to discourage their production ✓
• C. Fund reforestation projects directly through government spending
• D. Require all buildings to install solar panels

Why: A carbon tax sets a price on each unit of carbon emitted, creating an economic incentive to reduce emissions across the economy.

• A. Because policy only matters once it is signed into law
• B. Because influence is most effective when tailored to whether an issue is being agenda-set, drafted, adopted, or implemented ✓
• C. Because only the final vote in a legislature has any effect
• D. Because implementation is always handled by private companies

Why: Policy moves through stages such as agenda setting, formulation, adoption, and implementation, and advocacy strategies vary in effectiveness at each stage.

• A. Presenting data in graphs so that it is easier to read
• B. Selecting particular values, concepts, or perspectives to emphasize so that an issue is understood in a certain way ✓
• C. Legally certifying that a news story is factually accurate
• D. Translating scientific reports into multiple languages

Why: Framing refers to the way an issue is presented, highlighting certain aspects (such as economic opportunity versus public health risk) which shapes how audiences interpret and respond to climate information.

• A. A broadcast studio designed to amplify the sound of speakers
• B. A media environment where people mostly encounter information that reinforces their existing beliefs ✓
• C. A type of podcast that features only scientists
• D. A government program that repeats official climate messages on television

Why: An echo chamber occurs when people are primarily exposed to like-minded sources and views, which can reinforce existing beliefs and reduce exposure to differing perspectives, affecting how climate messages are received.

• A. Because global data is always inaccurate
• B. Because concrete, relatable examples often make abstract global risks easier for audiences to understand and care about ✓
• C. Because local stories are legally required in all climate reports
• D. Because personal stories replace the need for scientific evidence

Why: Abstract global statistics can feel distant. Relatable local stories and personal narratives help audiences connect emotionally and cognitively with climate change, making it more tangible.

• A. A belief that climate action is unnecessary, which activists support
• B. A sense of hopelessness that climate catastrophe is inevitable, which can discourage people from taking action ✓
• C. A scientific term for rising sea levels
• D. A marketing strategy used by fossil fuel companies to sell products

Why: Doomism can lead people to feel that their efforts are futile, causing disengagement. Many communicators therefore pair warnings about risk with messages about solutions and collective agency.

• A. Presenting a fringe view as equal in standing to the overwhelming scientific consensus, for the sake of balance
• B. Reporting on climate science while clearly distinguishing established findings from speculative or uncertain claims ✓
• C. Avoiding any mention of uncertainty to keep audiences calm
• D. Relying primarily on anonymous social media posts as sources

Why: Responsible reporting conveys the actual state of scientific knowledge, including where consensus is strong and where uncertainty remains, without falsely inflating minority views or hiding uncertainty.

• A. Violent confrontation with state authorities to force policy change
• B. Deliberate, public, nonviolent rule-breaking aimed at changing law or policy, with the actor accepting the legal consequences
• C. Secret sabotage of infrastructure to avoid detection by authorities
• D. Voting against elected officials while remaining within the law

• A. Mahatma Gandhi
• B. Martin Luther King Jr.
• C. Henry David Thoreau
• D. Rosa Parks

• A. To destroy fossil fuel company property
• B. To draw public attention to a issue and disrupt business as usual to pressure decision-makers
• C. To physically prevent all government officials from working
• D. To gain employment within the fossil fuel industry

• A. Nonviolent movements are always legal, so they avoid all penalties
• B. Nonviolent movements tend to attract broader public support and make repression appear illegitimate
• C. Violence is always illegal, so authorities ignore nonviolent protesters
• D. Nonviolent movements require no organization or planning

• A. Civil disobedience is always committed in secret
• B. Civil disobedience is motivated by a public appeal to principles of justice and is openly acknowledged by the actor
• C. Civil disobedience involves stealing money from the government
• D. Civil disobedience is only legal when approved by a court in advance

• A. Recruiting only experts with advanced scientific degrees
• B. Ensuring that the people most affected by climate impacts have a meaningful voice in decision-making ✓
• C. Focusing exclusively on individual lifestyle changes
• D. Avoiding partnerships with local community groups to keep messaging consistent

Why: Inclusive movements center the voices of those most affected by climate change, such as low-income communities, Indigenous peoples, and communities of color, who often bear the greatest burdens but are frequently excluded from decisions.

• A. A rapid, unplanned shutdown of all fossil fuel industries
• B. A shift to a low-carbon economy that protects workers and communities dependent on carbon-intensive industries ✓
• C. A legal process for transferring climate litigation between countries
• D. A marketing strategy for selling renewable energy products

Why: A just transition aims to decarbonize the economy while providing retraining, income support, and investment for workers and regions that would otherwise lose jobs and economic stability.

• A. It allows movements to avoid all conflict with other groups
• B. It ensures activists can maintain their efforts over time without burnout, financial collapse, or loss of community support ✓
• C. It guarantees that governments will adopt movement demands immediately
• D. It eliminates the need for volunteers and leadership development

Why: Sustainable movements build resilient organizations, healthy leadership pipelines, diverse funding, and self-care practices so that the work can continue across years and decades, which climate change requires.

• A. Clear, multilingual communication of meeting information
• B. Scheduling meetings during working hours without childcare or transport options ✓
• C. Providing stipends or reimbursements for travel to events
• D. Offering accessible venues for people with disabilities

Why: Scheduling that ignores work obligations, caregiving responsibilities, and transportation costs excludes people with fewer resources, limiting who can take part in the movement.

• A. It allows each group to dissolve its own identity and mission
• B. It broadens the base of support, combines diverse skills and networks, and connects climate goals to issues people care about daily ✓
• C. It reduces the number of people needed to take action
• D. It ensures that all members agree on every policy detail

Why: Coalitions bring together different constituencies, resources, and perspectives, making movements stronger and more representative while linking climate action to jobs, health, faith values, and local priorities.