Chapter 34: Problem 9

Discuss ozone depletion in detail.

Short Answer

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Ozone depletion refers to the thinning of the ozone layer in the earth's stratosphere due to the release of ozone-depleting chemicals into the atmosphere, particularly CFCs and halons. The main effect of this depletion is an increase in harmful UV-B rays reaching the earth's surface resulting in adverse health and environmental effects. Preventive steps include reducing use of ozone-depleting chemicals, car usage, and supporting research for ozone-friendly products.

Step by step solution

Understand Ozone

Ozone is a molecule made up of three oxygen atoms, it is mainly found in the stratosphere of our planet. The ozone layer is essential for life on earth as it absorbs most of the Sun's harmful ultraviolet radiation.

Causes of Ozone Depletion

Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere. The sun's rays break down these compounds, releasing chlorine and bromine, which, through a chemical reaction with UV rays, destroy ozone atoms.

Effects of Ozone Depletion

The main effect of ozone layer depletion is an increase in UV-B rays reaching the earth's surface. This can lead to more cases of skin cancer and cataracts in humans. It can also adversely affect crops and disrupt the marine food chain by damaging phytoplankton.

Solutions to Prevent Ozone Depletion

One of the biggest steps to prevent ozone depletion was the global agreement to stop producing CFCs, halons and other ozone-depleting chemicals. Still, we can further contribute by reducing the use of cars, preventing the release of nitrogen oxides and other ozone-depleting chemicals into the atmosphere, and supporting research into ozone-friendly products.

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Discuss ozone depletion in detail.

Short Answer

Step by step solution

Understand Ozone

Causes of Ozone Depletion

Effects of Ozone Depletion

Solutions to Prevent Ozone Depletion

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