Question
What is ozone shield? How is it being corroded?
What is ozone shield? How is it being corroded?
Ozone shield or ozone layer is a layer that protects earth from the harmful ultraviolet radiations coming from the sun thereby protecting us from serious ailments and thus acting as a shield. Ozone molecules form when a single O atm reacts with oxygen O2 molecule.
Chlorine containing compounds are major reason for the corrosion of ozone layer. Chlorofluorocarbons and certain other ozone depleting substances that contain chlorine and/or bromine are responsible for depletion of ozone layer. CFCs are made of chlorine. One single atom of chlorine destroys 1000 molecules of ozone.
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What is the function of bone, cartilage and ligament?
Match the following column with correct answers.
| Column I | Column II | ||
| a. | Fungal disease | i. | Dengue fever |
| b. | Viral disease | ii. | Cholera |
| c. | Protozoan disease | iii. | Skin disease |
| d. | Bacterial disease | iv. | Malaria |