GEOLOGY

Detailed explanation-1: -So, the correct answer is ‘An increase in the burning of fossil fuels’

Detailed explanation-2: -Human Activity Is the Cause of Increased Greenhouse Gas Concentrations. Over the last century, burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

Detailed explanation-3: -When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming.

Detailed explanation-4: -Since 1970, CO2 emissions have increased by about 90%, with emissions from fossil fuel combustion and industrial processes contributing about 78% of the total greenhouse gas emissions increase from 1970 to 2011. Agriculture, deforestation, and other land-use changes have been the second-largest contributors.

Detailed explanation-5: -Global carbon dioxide emissions from fossil fuels and cement have increased by 1.0% in 2022, new estimates suggest, hitting a new record high of 36.6bn tonnes of CO2 (GtCO2).