Gujarat BoardEnglish MediumSTD 11 ScienceChemistryEnvironmental Chemistry5 Marks
Question
What are the major causes of water pollution? Explain.
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Answer
The depletion of ozone layer is termed as ozone hole. It was first reported by a group of scientists working in Antarctica in 1980s.
Ozone layer is responsible for prevention of infiltration of UV rays which has the potential to cause serious damage to plants, animals and human life. Due to depletion of this $\mathrm{O}_3$ layer, these harmful rays will find an easy route into the earth’s atmosphere and create problems such as mutation of cells leading to cancer of the skin or increased transpiration in plants and reduced water level in soil. Increase in UV radiations damages paints and fibers causing them to fade faster.
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