Question: What is the main source of ozone depletion? (2021)
Options:
Carbon dioxide
Chlorofluorocarbons (CFCs)
Methane
Nitrous oxide
Correct Answer: Chlorofluorocarbons (CFCs)
Exam Year: 2021
Solution:
Chlorofluorocarbons (CFCs) are the primary substances responsible for ozone layer depletion.
What is the main source of ozone depletion? (2021)
Practice Questions
Q1
What is the main source of ozone depletion? (2021)
Carbon dioxide
Chlorofluorocarbons (CFCs)
Methane
Nitrous oxide
Questions & Step-by-Step Solutions
What is the main source of ozone depletion? (2021)
Step 1: Understand what ozone is. Ozone is a gas in the Earth's atmosphere that protects us from harmful UV rays from the sun.
Step 2: Learn about ozone depletion. Ozone depletion means that there is less ozone in the atmosphere, which can lead to more UV rays reaching the Earth.
Step 3: Identify the main cause of ozone depletion. The main substances that cause ozone depletion are called chlorofluorocarbons (CFCs).
Step 4: Know where CFCs come from. CFCs were commonly used in products like refrigerators, air conditioners, and aerosol sprays.
Step 5: Realize the impact of CFCs. When CFCs are released into the atmosphere, they eventually reach the ozone layer and break down ozone molecules, leading to depletion.
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