GREENHOUSE effect:The greenhouse effect is a natural process that warms the Earth's surface.Greenhouse GASES are mainly responsible for global warming.When the SUN's ENERGY reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.That trapping of heat is known as the greenhouse effect.EXPLANATION:Greenhouse gases in the atmosphere absorb the infrared radiations of higher wavelengths and warm the atmosphere.Values of radiation absorbed by the greenhouse gases in the year 2018 are as follow:GasValue of absorption in percentageOzone (O3)10.2 %Methane (CH4)10 %Carbon Dioxide (CO2)81 %Nitro Oxide (NO2) 6 %Fluorinated gases3 %Thus, From the above table, it is clear that Carbon dioxide is a gas LARGELY responsible for global warming.