What is the main cause of the depletion of the ozone layer?
Practice Questions
Q1
What is the main cause of the depletion of the ozone layer?
Carbon dioxide emissions
CFCs and halons
Methane emissions
Nitrogen oxides
Questions & Step-by-Step Solutions
What is the main cause of the depletion of the ozone layer?
Correct Answer: CFCs and halons
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 CFCs (chlorofluorocarbons) and halons. These are chemicals that were commonly used in products like refrigerators, air conditioners, and aerosol sprays.
Step 3: Realize that when CFCs and halons are released into the atmosphere, they rise up and eventually reach the ozone layer.
Step 4: Understand that when CFCs and halons reach the ozone layer, they break down ozone molecules (O3) into oxygen molecules (O2), which reduces the amount of ozone.
Step 5: Conclude that the main cause of the depletion of the ozone layer is the release of CFCs and halons into the atmosphere.
