अम्ल वर्षा वनस्पति को नष्ट कर देती है, क्योंकि उसमें मुख्य रूप से क्या होता है?

Consider the following statements: Chlorofluorocarbons, known as ozone-depleting substances, are used: 1. in the production of plastic foams2. in the production of tubeless tyres3. in cleaning certain electronic components4. as pressurizing agents in aerosol cans Which of the statements given above are correct?

The stratospheric ozone layer is most severely depleted by which class of atmospheric pollutants?