Types Of Pollutants

The Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants was launched by a joint effort of 1. United Nations Environment Programme (UNEP) 2. Six countries Bangladesh, Canada, Ghana, Mexico, Sweden, and the United States **Statement 1 is incorrect.** The Climate and Clean Air Coalition (CCAC) is not a unique initiative of the G20 group of countries. While some G20 members were involved in its launch, the CCAC has grown into a broader coalition that includes over 160 governments, intergovernmental organisations, and non-governmental organisations. **Statement 2 is correct.** The CCAC's primary focus is indeed on reducing emissions of potent short-lived climate pollutants (SLCPs). These include Methane (CH4), Black Carbon (BC) and Hydrofluorocarbons (HFCs).

Bioremediation is a technique that utilizes living organisms, primarily microorganisms like bacteria and fungi, to remove or neutralize contaminants from polluted environments. It essentially harnesses and accelerates natural biodegradation processes for environmental cleanup. **Statement 1 (correct):** This accurately describes a key advantage of bioremediation. It leverages and accelerates natural biodegradation processes by introducing suitable microorganisms or optimizing environmental conditions. **Statement 2 (incorrect):** Bioremediation can be effective for many contaminants but not all. Heavy metals like cadmium and lead are often not readily broken down or removed completely. They might be transformed or immobilized, but not necessarily eliminated. **Statement 3 (correct):** Genetic engineering offers a promising approach for developing microorganisms with enhanced capabilities for bioremediation. These engineered microbes can target specific pollutants or work more efficiently in challenging environments.