2017 · Q34
Statement IGlobal warming signifies the rise in global surface temperature.
Statement IIThe increase of concentration of greenhouse gases in the atmosphere causes the rise in global surface temperature.
General KnowledgeGeography
- ABoth the statements are individually true and Statement II; is the correct explanation of Statement I
- BBoth the statements lie individually true but Statement II is not the correct explanation of Statement I
- CStatement I is true but Statement II is false
- DStatement I is false but Statement II is true
Explanation
Statement I is true: global warming denotes the sustained rise in the Earth's average surface temperature. Statement II is true: the enhanced greenhouse effect — rising concentrations of carbon dioxide, methane and other greenhouse gases trapping outgoing longwave radiation — is the established cause of that warming. The causal link between the two is the core of climate science. Both statements are true and II is the correct explanation of I.