What is the main source of ozone layer depletion? (2021)
Practice Questions
Q1
What is the main source of ozone layer depletion? (2021)
Carbon dioxide
Chlorofluorocarbons (CFCs)
Methane
Nitrous oxide
Questions & Step-by-Step Solutions
What is the main source of ozone layer depletion? (2021)
Step 1: Understand what the ozone layer is. It is a layer of gas in the Earth's atmosphere that protects us from harmful ultraviolet (UV) rays from the sun.
Step 2: Learn about chlorofluorocarbons (CFCs). These are man-made chemicals that were commonly used in products like refrigerators, air conditioners, and aerosol sprays.
Step 3: Realize that when CFCs are released into the atmosphere, they eventually rise up to the ozone layer.
Step 4: Understand that CFCs break down in the ozone layer, releasing chlorine atoms.
Step 5: Know that these chlorine atoms react with ozone (O3) molecules, causing the ozone to break apart and deplete the ozone layer.
Step 6: Conclude that CFCs are the main source of ozone layer depletion because they directly harm the ozone molecules.
