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Why ozone hole forms over Antarctica? How will enhanced ultrav
Biology
Biology

Class 12

NCERT

Publisher:
NCERT
Subject:
Biology
1

Chapter 1: Reproduction in Organisms

18 questions

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2

Chapter 2: Sexual Reproduction in Flowering Plants

18 questions

arrow
3

Chapter 3: Human Reproduction

21 questions

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4

Chapter 4: Reproductive Health

12 questions

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5

Chapter 5: Principles of Inheritance and Variation

16 questions

arrow
6

Chapter 6: Molecular Basis of Inheritance

14 questions

arrow
7

Chapter 7: Evolution

10 questions

arrow
8

Chapter 8: Human Health and Disease

17 questions

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9

Chapter 9: Strategies for Enhancement in Food Production

12 questions

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10

Chapter 10: Microbes in Human Welfare

15 questions

arrow
11

Chapter 11: Biotechnology: Principles and Processes

12 questions

arrow
12

Chapter 12: Biotechnology and its Applications

10 questions

arrow
13

Chapter 13: Organisms and Populations

17 questions

arrow
14

Chapter 14: Ecosystem

13 questions

arrow
15

Chapter 15: Biodiversity and Conservation

10 questions

arrow
16

Chapter 16: Environmental Issues

11 questions

Q1
Write critical notes on the following:
(a) Eutrophication
(b) Biological magnification
(c) Groundwater depletion and ways for its replenishment
Q2
Why ozone hole forms over Antarctica? How will enhanced ultraviolet radiation affect us?
Q3
Discuss the role of women and communities in protection and conservation of forests.
View all question
Question
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Why ozone hole forms over Antarctica? How will enhanced ultraviolet radiation affect us?

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Biology (NCERT)

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Text SolutionText solutionverified iconVerified

Unique atmospheric and chemical conditions of Antartica including very low winter temperatures causing the formation of polar stratospheric clouds and the relative isolation of polar stratospheric air, facilitate reactions of abundant chlorine and bromine to produce the ozone hole. The increased UV irradiance on earth surface causes skin aging, skin cancer, cataract, skin darkening etc.
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Question Text
Why ozone hole forms over Antarctica? How will enhanced ultraviolet radiation affect us?
TopicEnvironmental Issues
SubjectBiology
ClassClass 12
Answer TypeText solution:1
Upvotes8