GEOLOGY

Detailed explanation-1: -The main greenhouse gases whose concentrations are rising are carbon dioxide, methane, nitrous oxide, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and ozone in the lower atmosphere.

Detailed explanation-2: -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-3: -Carbon dioxide is the major (percentage-wise) gas of greenhouse gas.

Detailed explanation-4: -Greenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and ozone (O3).

Detailed explanation-5: -Both water vapor and carbon dioxide are important greenhouse gases that play a crucial role in atmospheric warming. A greenhouse gas is a gas that absorbs and re-emits infrared radiation in Earth’s atmosphere, thereby increasing temperatures.