Question : The term "ozone hole" refers to:
Option 1: A region with high ozone concentrations in the atmosphere
Option 2: A region with low ozone concentrations in the atmosphere
Option 3: A hole in the ozone layer caused by human activities
Option 4: A hole in the ozone layer caused by natural processes
Correct Answer: A region with low ozone concentrations in the atmosphere
Solution : The correct answer is (B) A region with low ozone concentrations in the atmosphere
The term "ozone hole" refers to a specific phenomenon where the concentration of ozone in a particular region of the Earth's atmosphere becomes significantly depleted. This depletion occurs primarily in the stratosphere, specifically in the ozone layer. The ozone layer is a region that contains a higher concentration of ozone molecules, which play a vital role in absorbing and blocking a portion of the sun's ultraviolet (UV) radiation.
The ozone hole is a result of human activities that release substances known as ozone-depleting substances (ODS), such as chlorofluorocarbons (CFCs) and halons. These substances, once released into the atmosphere, can reach the stratosphere and undergo chemical reactions that break down ozone molecules, leading to a reduction in ozone concentration.
The ozone hole is most pronounced over Antarctica, where extremely low ozone concentrations are observed during the Southern Hemisphere's spring season. However, similar but less severe ozone depletion can occur in other regions of the world. Efforts have been made globally to reduce and eliminate the production and use of ozone-depleting substances through international agreements like the Montreal Protocol to protect the ozone layer and prevent further depletion.
Question : The term "e-waste" refers to:
Option 1: Waste generated by electronic devices
Option 2: Waste generated by industrial processes
Option 3: Waste generated by healthcare facilities
Option 4: Waste generated by construction activities
Question : The term "biodiversity" refers to:
Option 1: Variety of plant species in a region
Option 2: Variety of animal species in a region
Option 3: Variety of ecosystems in a region
Option 4: Variety of species, genes, and ecosystems in a region
Question : The concept of "technological unemployment" refers to:
Option 1: Unemployment caused by changes in the business cycle.
Option 2: Unemployment caused by the migration of workers to urban areas.
Option 3: Unemployment caused by the introduction of labor-saving technologies.
Option 4: Unemployment caused by the lack of job opportunities in rural areas.
Question : The concept of "cyclical unemployment" refers to:
Option 3: Unemployment caused by the lack of job opportunities in rural areas.
Option 4: Unemployment caused by the introduction of labor-saving technologies.
Question : The concept of "structural unemployment" refers to:
Option 1: Unemployment caused by changes in the business cycle
Option 2: Unemployment caused by the lack of job opportunities in rural areas
Option 3: Unemployment caused by the introduction of labor-saving technologies
Option 4: Unemployment caused by the migration of workers to urban areas
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