NCERT Class 12 Geography Geographical Perspective on Selected Issues and Problems

Read and download NCERT Class 12 Geography Geographical Perspective on Selected Issues and Problems in NCERT book for Class 12 Geography. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Geography textbook for Class 12 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 12 Geography to understand the answers of the exercise questions given at the end of this chapter

NCERT Book for Class 12 Geography India People and Economy Chapter 12 Geographical Perspective on Selected Issues and Problems

Class 12 Geography students should refer to the following NCERT Book India People and Economy Chapter 12 Geographical Perspective on Selected Issues and Problems in Class 12. This NCERT Book for Class 12 Geography will be very useful for exams and help you to score good marks

India People and Economy Chapter 12 Geographical Perspective on Selected Issues and Problems NCERT Book Class 12

GEOGRAPHICAL PERSPECTIVE ON SELECTED ISSUES AND PROBLEMS

Environmental Pollution

Environmental pollution results from ‘the release of substances and energy from waste products of human activities. There are many types of pollution. They are classified on the basis of medium through which pollutants are transported and diffused. Pollution can be classified into (i) air pollution, (ii) water pollution, (iii) land pollution and (iv) noise pollution.

Water Pollution

Indiscriminate use of water by increasing population and industrial expansion has led degradation of the quality of water considerably. Surface water available from rivers, canals, lakes, etc. is never pure. It contains small quantities of suspended particles, organic and inorganic substances. When concentration of these substances increases, the water becomes polluted, and hence becomes unfit for use. In such a situation, the self-purifying capacity of water is unable to purify the water. Though water pollutants are also created from natural sources (erosion, landslides, decay and decomposition of plants and animals, etc.) pollutants from human sources are the real causes of concern. Human beings pollute the water through industrial, agricultural and cultural activities. Among these activities, industry is the most significant contributor.

Industries produce several undesirable products including industrial wastes, polluted waste water, poisonous gases, chemical residuals, numerous heavy metals, dust, smoke, etc. Most of the industrial wastes are disposed off in running water or lakes. Consequently, poisonous elements reach the reservoirs, rivers and other water bodies, which destroy the bio-system of these waters. Major water polluting industries are leather, pulp and paper, textiles and chemicals.

Various types of chemicals used in modern agriculture such as inorganic fertilisers, pesticides and herbicides are also pollution generating components. These chemicals are washed down to rivers, lakes and tanks. These chemicals also infiltrate the soil to reach the ground water. Fertiliser induces an increase in the nitrate content of surface waters. Cultural activities such as pilgrimage, religious fairs, tourism, etc. also cause water pollution. In India, almost all surface water sources are contaminated and unfit for human consumption.

Water pollution is a source of various water borne diseases. The diseases commonly caused due to contaminated water are diarrhoea, intestinal worms, hepatitis, etc. World Health Organisation shows that about onefourth of the communicable diseases in India are water-borne.

Air Pollution

Air pollution is taken as addition of contaminants like dust, fumes, gas, fog, odour, smoke or vapour to the air in substantial proportion and duration that may be harmful to flora and fauna and to property.

Noise Pollution

Noise pollution refers to the state of unbearable and uncomfortable to human beings which is caused by noise from different sources. This matter has become a serious concern only in recent years due to a variety of technological innovations.

The main sources of noise pollution are various factories, mechanised construction and demolition works, automobiles and aircrafts, etc. There may be added periodical but polluting noise from sirens, loudspeakers used in various festivals, programmes associated with community activities. The level of steady noise is measured by sound level expressed in terms of decibels (dB).

 

EXERCISES

1. Choose the right answers of the following from the given options.

    (i) Which one of the following river is highly polluted?

         (a) Brahmaputra                               (c) Yamuna

         (b) Satluj                                         (d) Godavari

    (ii) Which one of the following deseases is caused by water pollution?

         (a) Conjunctivitis                               (c) Respiratory infections

         (b) Diarrhorea                                   (d) Bronchitis

    (iii) Which one of the following is the cause of acid rain?

         (a) Water pollution                            (c) Noise pollution

         (b) Land pollution                              (d) Air pollution 

    (iv) Push and pull factors are responsible for–

         (a) Migration                                    (c) Slums

         (b) Land degradation                        (d) Air pollution

2. Answer the following questions in about 30 words.

    (i) What is the difference between pollution and pollutants?

    (ii) Describe the major source of air pollution.

    (iii) Mention major problems associated with urban waste disposal in India.

    (iv) What are the effects of air pollution on human health.

3. Answer the following questions in about 150 words.

    (i) Describe the nature of water pollution in India.

    (ii) Describe the problem of slums in India.

    (iii) Suggest measures for reduction of land degradation.

 

Please refer to attached file for NCERT Class 12 Geography Geographical Perspective on Selected Issues and Problems

Fundamentals of Human Geography Appendix I
NCERT Class 12 Geography Appendix I
Fundamentals of Human Geography Appendix II
NCERT Class 12 Geography Appendix II
Fundamentals of Human Geography Chapter 01 Human Geography Nature and Scope
NCERT Class 12 Geography Human Geography Nature and Scope
Fundamentals of Human Geography Chapter 02 The World Population Distribution Density and Growth
NCERT Class 12 Geography The World Population Distribution Density and Growth
Fundamentals of Human Geography Chapter 03 Population Composition
NCERT Class 12 Geography Population Composition
Fundamentals of Human Geography Chapter 04 Human Development
NCERT Class 12 Geography Human Development
Fundamentals of Human Geography Chapter 05 Primary Activities
NCERT Class 12 Geography Primary Activities
Fundamentals of Human Geography Chapter 06 Secondary Activities
NCERT Class 12 Geography Secondary Activities
Fundamentals of Human Geography Chapter 07 Tertiary and Quaternary Activities
NCERT Class 12 Geography Tertiary and Quaternary Activities
Fundamentals of Human Geography Chapter 08 Transport and Communication
NCERT Class 12 Geography Transport and Communication
Fundamentals of Human Geography Chapter 09 International Trade
NCERT Class 12 Geography International Trade
Fundamentals of Human Geography Chapter 10 Human Settlements
NCERT Class 12 Geography Human Settlements
Fundamentals of Human Geography Glossary
NCERT Class 12 Geography Glossary
India People and Economy Appendices
NCERT Class 12 Geography Appendices
India People and Economy Chapter 01 Population Distribution Density Growth and Composition
NCERT Class 12 Geography Population Distribution Density Growth and Composition
India People and Economy Chapter 02 Migration Types Causes and Consequences
NCERT Class 12 Geography Migration Types Causes and Consequences
India People and Economy Chapter 03 Human Development
NCERT Class 12 Geography Human Development
India People and Economy Chapter 04 Human Settlements
NCERT Class 12 Geography Human Settlements
India People and Economy Chapter 05 Land Resources and Agriculture
NCERT Class 12 Geography Land Resorces and Agriculture
India People and Economy Chapter 06 Water Resources
NCERT Class 12 Geography Water Resources
India People and Economy Chapter 07 Mineral and Energy Resources
NCERT Class 12 Geography Mineral and Energy Resources
India People and Economy Chapter 08 Manufacturing Industries
NCERT Class 12 Geography Manufacturing Industries
India People and Economy Chapter 09 Planning and Sustainable Development in Indian Context
NCERT Class 12 Geography Planning and Sustainable Development in Indian Context
India People and Economy Chapter 11 International Trade
NCERT Class 12 Geography International Trade
India People and Economy Chapter 12 Geographical Perspective on Selected Issues and Problems
NCERT Class 12 Geography Geographical Perspective on Selected Issues and Problems
India People and Economy Glossary
NCERT Class 12 Geography Glossary
Practical Work in Geography Part II Annexure
NCERT Class 12 Geography Annexure
Practical Work in Geography Part II Chapter 01 Data Its Sources and Compilation
NCERT Class 12 Geography Data Its Sources and Compilation
Practical Work in Geography Part II Chapter 02 Data Processing
NCERT Class 12 Geography Data Processing
Practical Work in Geography Part II Chapter 03 Graphical Representation of Data
NCERT Class 12 Geography Graphical Representation of Data
Practical Work in Geography Part II Chapter 04 Use of Computer in Data Processing and Mapping
NCERT Class 12 Geography Use of Computer in Data Processing and Mapping
Practical Work in Geography Part II Chapter 05 Field Surveys
NCERT Class 12 Geography Field Surveys
Practical Work in Geography Part II Chapter 06 Spatial Information Technology
NCERT Class 12 Geography Spatial Information Technology
Practical Work in Geography Part II Glossary
NCERT Class 12 Geography Glossary

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