Which of the following is an environmental issue that has recently arisen?

Concept: Ozone subcaste reduction :- The ozone subcaste is a region in the earth’s stratosphere that contains high attention of ozone and protects the earth from the dangerous ultraviolet radiations of the sun. 

Ozone subcaste reduction is the gradual thinning of the earth’s ozone subcaste in the upper atmosphere caused due to the release of chemical composites containing gassy bromine or chlorine from diligence or other mortal conditioning. 

Greenhouse effect :- Hothouse effect is the process by which radiation from the sun are absorbed by the hothouse feasts and not reflected back into space. This insulates the face of the earth and prevents it from indurating. The major contributors to the glasshouses

Feasts are manufacturing, motorcars, deforestation etc. The increased number of manufactories and motorcars increases the quantum of these feasts in the atmosphere 

Global warming :- Global warming is a gradual increase in the earth’s temperature generally due to the greenhouse effect caused by increased situations of carbon dioxide, CFCs, and other adulterants. The feasts present in the atmosphere for illustration ozone, methane, carbon dioxide, water vapour and chlorofluorocarbons are called hothouse feasts, they absorb some heat thereby confining the heat to escape our atmosphere. These feasts add to the heating of the atmosphere and affect in global warming