SSC MTS EXAM

Detailed explanation-1: -Water vapor is Earth’s most abundant greenhouse gas. It’s responsible for about half of Earth’s greenhouse effect-the process that occurs when gases in Earth’s atmosphere trap the Sun’s heat.

Detailed explanation-2: -Methane (CH4) is the second most important greenhouse gas. It is more potent than CO2, but exists in far lower concentrations in the atmosphere.

Detailed explanation-3: -Water vapor is the most abundant greenhouse gas in the atmosphere. Human activities have only a small direct influence on atmospheric concentrations of water vapor, primarily through irrigation and deforestation, so it is not included in this indicator.