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3. Changes Caused by Over Grazing

The chapter discusses various environmental challenges and energy resources, highlighting the impact of human activities on land degradation, desertification, and the need for sustainable practices. It categorizes energy resources into non-renewable and renewable, elaborating on their advantages and disadvantages. The chapter emphasizes the importance of conserving natural resources and suggests practical steps individuals can take to contribute to sustainability.

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Sections

  • 3

    Changes Caused By Over Grazing

    Overgrazing leads to reduced productivity and biodiversity, triggering desertification and soil erosion.

    Learning Practice

  • 3.1

    Energy Resources

    This section discusses the definition and importance of energy resources, their types, and implications on economic growth and the environment.

    Learning Practice

  • 3.1.1

    Growing Energy Needs

    This section explores the critical role of energy in economic growth and the various sources of energy available today, highlighting the implications for sustainability.

    Learning Practice

  • 3.1.2

    Uses Of Energy

    This section explores the various uses and types of energy resources and emphasizes the impact of human activities on energy consumption and environmental sustainability.

    Learning Practice

  • 3.1.3

    Types Of Energy

    This section discusses various types of energy resources, including non-renewable, renewable, and nuclear energy, their significance, and the impact of human activities.

    Learning Practice

  • 3.1.3.A

    Non-Renewable Energy Resources

    This section discusses the various non-renewable energy resources, detailing their significance, extraction methods, and environmental impacts.

    Learning Practice

  • 3.1.3.A.1

    Fossil Fuels

    The section explores the various types of fossil fuels, their formation, and the environmental impacts associated with their extraction and usage.

    Learning Practice

  • 3.1.3.A.1.a

    Coal

    This section covers the movement of salts due to water table fluctuations, climatic factors favoring salt accumulation, and human activities such as overgrazing that impact land productivity and biodiversity.

    Learning Practice

  • 3.1.3.A.1.b

    Crude Oil

    The section discusses the significance of crude oil as a vital energy resource, emphasizing the environmental impacts and human activities contributing to its scarcity.

    Learning Practice

  • 3.1.3.A.1.c

    Natural Gas

    This section covers the mobility of salts caused by environmental and human factors, the impact of overgrazing, and the significance of energy resources, specifically focusing on natural gas.

    Learning Practice

  • 3.1.3.B

    Renewable Energy Resources

    This section discusses renewable energy sources, their significance, types, and environmental impacts, alongside human influences on energy resources.

    Learning Practice

  • 3.1.3.B.1

    Solar Energy

    This section covers the fundamentals of solar energy, its conversion processes, and its significance as a renewable energy resource.

    Learning Practice

  • 3.1.3.B.2

    Hydro-Power Energy

    Hydro-power energy is generated through hydroelectric projects, converting the kinetic energy of water into electrical energy while posing environmental challenges.

    Learning Practice

  • 3.1.3.B.3

    Geothermal Energy

    This section discusses geothermal energy, including its potential sources, advantages, and associated environmental impacts.

    Learning Practice

  • 3.1.3.B.4

    Wind Energy

    This section explores the fundamentals of wind energy, including its sources, conversion technology, advantages, disadvantages, and its potential as a renewable energy resource.

    Learning Practice

  • 3.1.3.B.5

    Ocean Energy

    Ocean energy is a clean, renewable energy source derived from seas and oceans, primarily through thermal and tidal energy methods.

    Learning Practice

  • 3.1.3.B.6

    Bio Mass Energy

    This section discusses the challenges and benefits associated with biomass energy production.

    Learning Practice

  • 3.1.3.B.7

    Bio-Gas

    This section discusses bio-gas as a source of renewable energy produced from organic waste materials.

    Learning Practice

  • 3.1.3.C

    Nuclear Energy Or Atomic Power

    This section describes nuclear energy, highlighting its production through fission and fusion, its advantages, disadvantages, and environmental concerns, including waste disposal.

    Learning Practice

  • 3.2

    Land Resources

    Land as a resource can be renewable or non-renewable based on its management and usage, which significantly impact biodiversity and productivity.

    Learning Practice

  • 3.2.1

    Conservation Of Natural Resources

    Conserving natural resources involves individual efforts in water, energy, and soil preservation essential for sustainable development.

    Learning Practice

  • 3.2.2

    Land Degradation And Control Of Land Degradation

    This section discusses the causes and effects of land degradation as well as methods for its control.

    Learning Practice

  • 3.2.2.1

    Methods For The Prevention Of Land Degradation

    This section explores the various methods for preventing land degradation, focusing on the impact of human activities and techniques like contour farming, mulching, crop rotation, and strip cropping.

    Learning Practice

  • 3.2.2.1.a

    Contour Farming

    Contour farming involves preparing land along the contours of the land to conserve moisture and reduce soil erosion.

    Learning Practice

  • 3.2.2.1.b

    Mulching

    Mulching is a practice in agriculture aimed at conserving soil moisture, enhancing soil health, and preventing weed growth.

    Learning Practice

  • 3.2.2.1.c

    Crop Rotation

    Crop rotation is an agricultural practice that involves alternating the types of crops grown on a particular piece of land to improve soil health and reduce pests.

    Learning Practice

  • 3.2.2.1.d

    Strip Cropping

    Strip cropping is an agricultural practice that helps manage soil erosion and water runoff by alternating different crops in strips.

    Learning Practice

  • 3.2.3

    Landslides And Man Induced Landslides

    This section discusses landslides, their natural and human-induced causes, and their consequences on the environment.

    Learning Practice

  • 3.2.4

    Soil Erosion And Causes For Soil Erosion

    Soil erosion is primarily caused by deforestation, overgrazing, and industrialization, leading to the degradation of land quality.

    Learning Practice

  • 3.2.5

    Desertification

    Desertification is a process where productive land turns into desert due to various factors, including poor land management and human activities.

    Learning Practice

  • 3.2.5.1

    Causes Of Desertification

    Desertification is primarily fueled by environmental conditions and human activities, including overgrazing, cultivation of marginal lands, and poor irrigation practices.

    Learning Practice

  • 3.2.5.2

    Effects Of Desertification

    Desertification diminishes land productivity due to several factors such as overgrazing, climatic trends, and human activities.

    Learning Practice

  • 3.3.1

    Role Of An Individual Conservation Of Natural Resources

    Individuals can significantly contribute to the conservation of natural resources through various practical actions.

    Learning Practice

  • 3.3.1.a

    Conserve Water

    This section discusses practical ways individuals can conserve water to contribute to environmental sustainability.

    Learning Practice

  • 3.3.1.b

    Conserve Energy

    This section discusses the various ways in which energy can be conserved, addressing the impacts of human activities and natural events on land and energy resources.

    Learning Practice

  • 3.3.1.c

    Protect The Soil

    This section discusses the significant factors affecting soil health, including the consequences of overgrazing and human activities like land clearings.

    Learning Practice

  • 3.3.1.d

    Promote Sustainable Agriculture

    This section discusses the importance of sustainable agricultural practices to combat the adverse effects of overgrazing and promote soil health.

    Learning Practice

References

ch1 part c.pdf

Class Notes

Memorization

What we have learnt

  • Overgrazing leads to decrea...
  • Energy plays a crucial role...
  • Conservation practices, suc...

Final Test

Revision Tests