Advertisements
Advertisements
Question
The following picture depicts a certain phenomenon
- Name the phenomenon and explain it.
- Enlist the sources that are responsible for the above mentioned phenomenon.
- List out the effects of the above phenomenon on humans.
Solution
- The above phenomenon is the depletion of the Ozone Layer. Ozone layer depletion is a phenomenon in which certain gaseous compounds, such as chlorofluorocarbons (CFCs), break down into chlorine atoms, which in turn break down ozone (O3) into oxygen (O2) and O.
-
- Use of CFCs in fire extinguishers and aerosol sprayers.
- Use of CFCs in refrigerators.
- Packing material styrofoam.
-
- Depletion of the ozone layer can affect global rainfall, cause ecological disruptions, and reduce world food supplies.
- The depletion of the ozone layer allows UV radiation to reach the planet. UV radiation can cause skin cancer and harm to the eyes and immune system.
APPEARS IN
RELATED QUESTIONS
Write the harmful effects of ozone depletion.
With the help of a flow diagram, describe how energy from the sun flows through various trophic levels.
Which pollutant released into the air during refrigeration and airconditioning is the greatest contributor to the depletion of ozone layer?
(a) BHC
(b) DDT
(c) CFC
(d) UNEP
The excessive exposure of humans to ultraviolet rays results in:
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
“Damage to the ozone layer is a cause of concern”. Justify this statement.
Which compounds are responsible for the depletion of ozone layer?
Describe the methods of saving the ozone layer.
The substance which is chiefly responsible for the depletion of ozone layer is ______.
In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent the depletion of “Y”. “X” and “Y” respectively referred to here are ______.
World Ozone day is celebrated on ______.
