Consider the following statements : 1. Climate and Clean Air Coalition (CCAC) to Reduce Short Lived Climate Pollutants is a unique initiative of G20 group of countries. 2. The CCAC focuses on methane, black carbon and hydrofluorocarbons. Which of the statements given above is/are correct ?

Lists major international environmental agreements (Montreal, Kyoto, Paris) and shows such initiatives often arise from global UN/UNFCC processes or worldwide summits rather than a single club of countries.

A student could check whether CCAC is tied to UN/UNFCCC processes or to a G20 declaration — if CCAC is absent from UN-led lists, that would weigh against it being a unique G20 initiative.

Gives an explicit example (GCCA) of an environmental initiative created by a specific body (the European Commission), illustrating that such initiatives are commonly created by international organisations or unions, not necessarily by the G20.

Compare CCAC’s founding documentation to see which organisation(s) announced or administer it (e.g., an international organisation vs. G20 communiqués).

Notes that special initiatives (e.g., 'Momentum for Change') have been launched under UNFCCC, indicating that many prominent climate initiatives originate from UNFCCC/COP processes.

Check COP/UNFCCC records to see if CCAC was launched there rather than within G20 fora.

Describes the Petersberg Climate Dialogue as a country-hosted forum (Germany) for climate initiatives, showing another pattern: initiatives can be hosted/chaired by individual countries or bilateral/multilateral dialogues rather than by the G20 as a group.

Inspect CCAC’s launch event to see if it was associated with a country-hosted dialogue, a UN forum, or a G20 summit.

Explains that black carbon is a short‑lived climate pollutant with regional impacts, linking the topical focus (short‑lived pollutants) to initiatives specifically targeting such pollutants — implying CCAC’s subject matter aligns with specialized coalitions rather than necessarily a G20-wide unique program.

Use this topical clue to search whether CCAC is described as a technical coalition focused on short‑lived pollutants and who the stated founders/partners were (UN bodies, individual countries, or G20).

Defines black carbon as a short‑lived atmospheric constituent (1–4 weeks) with strong regional climate effects.

A student could infer black carbon is a candidate SLCP the CCAC might target and check sectors (e.g., transport, biomass burning) on a map to judge regional priorities.

Lists methane (CH4) and hydrofluorocarbons (HFCs) among important greenhouse gases, highlighting they are distinct from long‑lived CO2.

One can extend this by noting methane and HFCs are shorter‑lived than CO2 and thus plausible SLCPs for targeted reduction; a student could verify typical sources (agriculture, waste, refrigeration) against CCAC program themes.

Explains that for biomagnification a pollutant must be long‑lived and contrasts with short‑lived pollutants being broken down—this gives a conceptual distinction between short‑ and long‑lived pollutants.

A student could use this rule to separate candidate SLCPs (which decay quickly) from long‑lived gases like CO2 when evaluating which pollutants CCAC would sensibly focus on.

Notes CO2 is the dominant long‑lived climate forcing, implying other, less long‑lived agents also affect warming.

Using this contrast, a student could reason that an initiative named to reduce 'short‑lived climate pollutants' likely targets non‑CO2 agents (e.g., methane, black carbon, HFCs) and then check emission sources geographically.