This document provides an overview of various natural resources including forest resources, water resources, mineral resources, food resources, and energy resources. It discusses the classification of renewable and non-renewable resources and describes key resources within each category like forests, water, minerals, and food. For each resource, the document outlines important types, uses, environmental impacts of overexploitation, and management strategies.
The Ecosystem - Its Structure and function plays a key role in the sustenance of Life on this Earth. Be it land, air, water .... the ecosystem decides the survival ...
The presentation is aimed for undergraduate students and covers the details of forest ecosystem, grassland ecosystem, desert ecosystem as well as aquatic ecosystems. It is suitable for compulsory environmental science course at undergraduate level. The content has been simplified for easy understanding of both science as well as humanities students.
1. “What we are doing to the forests of the world is but a mirror reflection of what we are doing to ourselves and to one another.” ― MAHATMA GANDHI ―
2. “Earth provides enough to satisfy every man's needs, but not every man's greed.” ― Mahatma Gandhi
3. The term “resource” means any thing that we use from our environment to achieve our objective. For example, we require bricks, cement, iron, wood etc. to construct a building. All these items are called the resources for construction of building. A resource can be defined as „any natural or artificial substance, energy or organism, which is used by human being for its welfare. These resources are of two types: Natural Resources Artificial Resources
4. “Nature is not a place to visit. It is home.” ― Gary Snyder
5. CONSERVATION OF NATURAL RESOURCES As the human population is continuously growing the consumption of natural resources is also increasing. With the increasing industrialization and urbanization of the modern human society, the use of all the resources is rising. If they are not properly used and well managed, a serious scarcity will result. Therefore we need to conserve the natural resources. This will also upset the ecological balance. Conservation is the proper management of a natural resource to prevent its exploitation, destruction or degradation. Conservation is the sum total of activities, which can derive benefits from natural resources but at the same time prevent excessive use leading to destruction or degradation.
6. Need for Conservation of Natural Resources We know that nature provides us all our basic needs but we tend to overexploit it. If we go on exploiting the nature, there will be no more resources available in future. There is an urgent need to conserve the nature. Some of the needs are : to maintain ecological balance for supporting life. to preserve different kinds of species (biodiversity). to make the resources available for present and future generation. to ensure the survival of human race.
7. Conservation of Natural Resources and Traditions of India The need for conservation of natural resources was felt by our predecessors and in India, there was a tradition of respecting and preserving the nature and natural resources. Natural resources were conserved in the form of sacred groves/forests, sacred pools and lakes, sacred species etc. In our country the conservation of natural forests is known from the time of Lord Asoka. Sacred forests are forest patches of different dimensions dedicated by the tribal to their deities and ancestral spirits. Cutting down trees, hunting and other human interferences were strictly prohibited in these forests.
8. This practice is wide spread particularly in peninsular, central and eastern India and has resulted in the protection of a large number of plants and animals. Similarly, several water bodies, e.g., Khecheopalri lake in Sikkim was declared sacred by people, thus, protecting aquati
The Ecosystem - Its Structure and function plays a key role in the sustenance of Life on this Earth. Be it land, air, water .... the ecosystem decides the survival ...
The presentation is aimed for undergraduate students and covers the details of forest ecosystem, grassland ecosystem, desert ecosystem as well as aquatic ecosystems. It is suitable for compulsory environmental science course at undergraduate level. The content has been simplified for easy understanding of both science as well as humanities students.
1. “What we are doing to the forests of the world is but a mirror reflection of what we are doing to ourselves and to one another.” ― MAHATMA GANDHI ―
2. “Earth provides enough to satisfy every man's needs, but not every man's greed.” ― Mahatma Gandhi
3. The term “resource” means any thing that we use from our environment to achieve our objective. For example, we require bricks, cement, iron, wood etc. to construct a building. All these items are called the resources for construction of building. A resource can be defined as „any natural or artificial substance, energy or organism, which is used by human being for its welfare. These resources are of two types: Natural Resources Artificial Resources
4. “Nature is not a place to visit. It is home.” ― Gary Snyder
5. CONSERVATION OF NATURAL RESOURCES As the human population is continuously growing the consumption of natural resources is also increasing. With the increasing industrialization and urbanization of the modern human society, the use of all the resources is rising. If they are not properly used and well managed, a serious scarcity will result. Therefore we need to conserve the natural resources. This will also upset the ecological balance. Conservation is the proper management of a natural resource to prevent its exploitation, destruction or degradation. Conservation is the sum total of activities, which can derive benefits from natural resources but at the same time prevent excessive use leading to destruction or degradation.
6. Need for Conservation of Natural Resources We know that nature provides us all our basic needs but we tend to overexploit it. If we go on exploiting the nature, there will be no more resources available in future. There is an urgent need to conserve the nature. Some of the needs are : to maintain ecological balance for supporting life. to preserve different kinds of species (biodiversity). to make the resources available for present and future generation. to ensure the survival of human race.
7. Conservation of Natural Resources and Traditions of India The need for conservation of natural resources was felt by our predecessors and in India, there was a tradition of respecting and preserving the nature and natural resources. Natural resources were conserved in the form of sacred groves/forests, sacred pools and lakes, sacred species etc. In our country the conservation of natural forests is known from the time of Lord Asoka. Sacred forests are forest patches of different dimensions dedicated by the tribal to their deities and ancestral spirits. Cutting down trees, hunting and other human interferences were strictly prohibited in these forests.
8. This practice is wide spread particularly in peninsular, central and eastern India and has resulted in the protection of a large number of plants and animals. Similarly, several water bodies, e.g., Khecheopalri lake in Sikkim was declared sacred by people, thus, protecting aquati
This presentation talks about the Water Uses, Water Forms and Distribution, Availability, Fresh Water Shortage, Water Use Problems and Conflicts Increase Water Supply, Floods and Drought
It talks about the shortage of water all across the globe. So people should use it effectively without unnecessary wastage.
Types of natural resources, natural resource conservation, Role of an individual in conservation of natural resources, Equitable use of
resources for sustainable lifestyles. 2. Land resources: Land as a resource, land degradation, man induced landslides, Land resources: soil
erosion and desertification. 3. Natural Resources: Forest resources: Use and over-exploitation, deforestation, case studies. Timber
extraction, mining, dams and their effects on forests and tribal people. 4. Natural Resources: Water resources: Use and over-utilization of
surface and ground water, floods, drought, conflicts over water, dams-benefits and problems. 5. Natural Resources: Mineral resources:
Use and exploitation, environmental effects of extracting and using mineral resources, case studies. 6. Natural Resources: Food
resources: World food problems, changes caused by agriculture and overgrazing, Food resources effects of modern agriculture, fertilizerpesticide problems, water logging, salinity, case studies. 7. Natural Resources: Energy resources: Growing energy needs, Energy
L T P/S SW FW TOTAL
CREDIT
UNITS
2 - - 4 0 4
resources renewable and non-renewable energy sources, Energy resources use of alternate energy sources, case studies. 8. Role of
individual in conservation of natural resources 9. Equitable use of resources for sustainable lifestyles.
Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Venturesgreendigital
Willie Nelson is a name that resonates within the world of music and entertainment. Known for his unique voice, and masterful guitar skills. and an extraordinary career spanning several decades. Nelson has become a legend in the country music scene. But, his influence extends far beyond the realm of music. with ventures in acting, writing, activism, and business. This comprehensive article delves into Willie Nelson net worth. exploring the various facets of his career that have contributed to his large fortune.
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Introduction
Willie Nelson net worth is a testament to his enduring influence and success in many fields. Born on April 29, 1933, in Abbott, Texas. Nelson's journey from a humble beginning to becoming one of the most iconic figures in American music is nothing short of inspirational. His net worth, which estimated to be around $25 million as of 2024. reflects a career that is as diverse as it is prolific.
Early Life and Musical Beginnings
Humble Origins
Willie Hugh Nelson was born during the Great Depression. a time of significant economic hardship in the United States. Raised by his grandparents. Nelson found solace and inspiration in music from an early age. His grandmother taught him to play the guitar. setting the stage for what would become an illustrious career.
First Steps in Music
Nelson's initial foray into the music industry was fraught with challenges. He moved to Nashville, Tennessee, to pursue his dreams, but success did not come . Working as a songwriter, Nelson penned hits for other artists. which helped him gain a foothold in the competitive music scene. His songwriting skills contributed to his early earnings. laying the foundation for his net worth.
Rise to Stardom
Breakthrough Albums
The 1970s marked a turning point in Willie Nelson's career. His albums "Shotgun Willie" (1973), "Red Headed Stranger" (1975). and "Stardust" (1978) received critical acclaim and commercial success. These albums not only solidified his position in the country music genre. but also introduced his music to a broader audience. The success of these albums played a crucial role in boosting Willie Nelson net worth.
Iconic Songs
Willie Nelson net worth is also attributed to his extensive catalog of hit songs. Tracks like "Blue Eyes Crying in the Rain," "On the Road Again," and "Always on My Mind" have become timeless classics. These songs have not only earned Nelson large royalties but have also ensured his continued relevance in the music industry.
Acting and Film Career
Hollywood Ventures
In addition to his music career, Willie Nelson has also made a mark in Hollywood. His distinctive personality and on-screen presence have landed him roles in several films and television shows. Notable appearances include roles in "The Electric Horseman" (1979), "Honeysuckle Rose" (1980), and "Barbarosa" (1982). These acting gigs have added a significant amount to Willie Nelson net worth.
Television Appearances
Nelson's char
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
Natural farming @ Dr. Siddhartha S. Jena.pptxsidjena70
A brief about organic farming/ Natural farming/ Zero budget natural farming/ Subash Palekar Natural farming which keeps us and environment safe and healthy. Next gen Agricultural practices of chemical free farming.
Artificial Reefs by Kuddle Life Foundation - May 2024punit537210
Situated in Pondicherry, India, Kuddle Life Foundation is a charitable, non-profit and non-governmental organization (NGO) dedicated to improving the living standards of coastal communities and simultaneously placing a strong emphasis on the protection of marine ecosystems.
One of the key areas we work in is Artificial Reefs. This presentation captures our journey so far and our learnings. We hope you get as excited about marine conservation and artificial reefs as we are.
Please visit our website: https://kuddlelife.org
Our Instagram channel:
@kuddlelifefoundation
Our Linkedin Page:
https://www.linkedin.com/company/kuddlelifefoundation/
and write to us if you have any questions:
info@kuddlelife.org
3. Definition :
Natural resources are things that are found
in nature that are useful to people
4. Natural resources are classified
into two types.
1.Renewable resources
2.Non-renewable resources
5. 1.Renewable resources –which can be regenerated
within a span of a time
Ex: soil,water,air, wildlife, natural vegetation
The renewable resources are further sub classified
into two types:
a)Continuous resources:
Ex: solar energy, wind, tidal energy
b)Extrinsic resources:
Ex: human skills, institutions, management abilities.
7. FOREST RESOURCES
Forest are one of the most important renewable
natural resources on this earth.
Types of forests:
1. Evergreen forests
2. Deciduous forests.
3. Coniferous forests.
8. 1. Evergreen forests
ex: the silent valley in Kerala
Important trees- Teal, rosewood.
2. Deciduous forests
a) Tropical deciduous forests – teak, sandalwood.
b) Temperature deciduous forests
3. Coniferous forests
Ex: pine tree, spruce tree.
9. Functions of forests
1.Forests perform very important functions both to
humans and to nature.
2.habitats- plants, animals, and wildlife.
3. Recycle – rainwater and remove pollutants from
air.
4. Control water quality and quantity.
5.Moderate temperature and weather and maintain
humidity.
10. Uses (or) Benefits of forests
Fuel
Raw materials as pulp, paper, board, timber
etc.,
Gums, resins, dyes ,etc.,
Medicines and drugs.
Honey, ivory.
Mining, grazing, dams
11. Ecological uses
Production of oxygen
Reducing global warming
Soil conservation
Regulation of hydrological cycle
Pollution moderators
Wildlife habitat
12. Aesthetic value
Bamboo – mats, baskets, cots, etc.,
Plants – fruits, leaves, seeds, roots are used as
food.
Medicines , alcoholic drinks.
Aromatic oils and other oils used for lighting and
cooking.
13. Touristic value
Ecotourism provides a growing income for
those who have facilitated it. Several countries
are now attracting the tourists.
OVER EXPLOITATION OF FOREST
Reason for over exploitation in India
Causes for over exploitation
a) increasing agricultural production
b) increasing industrial activities
c) increasing demand of wood resources.
14. DEFORESTATION
Definition: Deforestation is the process of removal
of (or) elimination of forest resources due to many
natural or man-made activities. In general
deforestation means destruction of forests.
Causes of Deforestation
Developmental projects.
i) Through submergence of forest area
underwater
ii) Destruction of forest area
Examples: big-dams, hydroelectric projects, road
construction etc.
16. Effects of deforestation on the
environment
Global warming
Loss of genetic diversity
Soil erosion
Loss of biodiversity
Loss of food grains
Unemployment problems
Flood and landslides
17. Conservation of forests
New plants of more or replace the existing trees.
Wood –use fuel ,should be discouraged
Spraying pesticides
Forest fire must be controlled by modern
techniques
Over grazing by cattle must be controlled
Education and awareness programmes must be
conducted
Strict implementation of law
18. CASE STUDIES
Timber Extraction
Mining
Dams and Their effects on forests and tribal
people
19. Uses of timber
Timber – raw materials, pulp, paper, furniture, etc
Timber –developmental activities, railways, boats,
road construction.
Effects of timber extraction
Deforestation
Soil erosion, loss of fertility, landslides, and loss of
biodiversity
Tribal culture
Reduces thickness of forest
20. Mining
Types of mining
Surface mining-shallow deposits
Underground mining-
Steps involved in mining
Exploration
Development
Exploitation
Ore processing
Extraction and purification of minerals
21. Effects of mining
Mining activity- destroy trees, pollutes soil,
water, air.
Destruction of natural habitat at the mine
and disposal sites.
Noise pollution is the another major
problem from mining operations.
Mining reduces the shape and size of the
forest areas.
22. Dams and their effects on forest
and tribal people
Dams are the massive artificial structures
built across the river to create a reservoir in-
order to store water for many beneficial
purpose.
Effects of dam on forest
Thousands of hectares
Residential accommodation
23. WATER RESOURCES
Water is an important component of all the
living beings.
Nearly 80% of earth surface is covered with
water
All organisms are made up of mostly by
water
Example: Tree, Animals
25. Distribution of water resources
Found 97.4% water in oceans and is too salty and
cannot be used for drinking, irrigation, industrial
purposes.
Remaining 2.6% of fresh water , most of which is
licked up in ice or in deep ground water.
Thus only about 0.014% of the earth’s total
volume of water is easily available to us as usable
ground water
26. Types of fresh water resources
Fresh water resources may be classified into
two types.
1.surface water
a) standing water bodies: Lakes, reservoirs,
estuaries.
b) flowing water bodies: Streams, rivers.
2.under ground water.
27. Surface water
The water , which is coming out directly
through precipitation and does not percolate
down into the ground or does not return to
the atmosphere by evaporation is known as
surface water.
Or
The water stored on the surface of earth is
called surface water.
28. Uses of water-different types
Consumptive use- here water is completely
utilized and it is not reused
Example : industry and irrigation
Non –consumptive use – water is not
completely utilized and it is used.
Example: hydropower plant.
29. Other important uses of water
Drinking, cooking, bathing, and washing, etc.,
Hotels, theatres, educational institutions,
offices,etc.,
Irrigation,aggriculture
Industrial operations
All the living organisms
30. Over –utilization of water
(surface and ground water
The rapid increase in population and industrial
growth have increased the demand for water
resources
Effects on over utilization of water
Decrease of ground water
Ground subsidence
Lowering of water table
Intrusion of salt water
Earthquake and landslides
Drying up of wells
Pollution of water
31. floods
A flood is an overflow of water , whenever
the magnitude of flow of water exceeds the
carrying capacity of the channel within its
banks.
Causes of floods
Heavy rainfall, melting of snow, sudden
release of water from dams.
Over flowing of lakes and rivers
32. Effect of floods
Due to flood, water spreads in the surrounding
areas and submerges them
Due to floods the plain surface have become
eroded and silted with mud and sand, thus the
cultivable land areas gets affected.
Flood management
Controlled by dams or reservoirs
Channel management and embankments also control the
floods.
Flood hazard may also be reduced by forecasting or flood
warning.
33. drought
Drought is nothing but scarcity of water,
which occurs due to inadequate, late arrival
of rains and excessive withdrawal of ground
water.
35. Causes of drought
When annual rainfall is below normal and
less than evaporation, drought is created.
High population is also another cause for
drought
Deforestation leads to desertification and
drought too. when the trees are cut, the soil
is subject to erosion by heavy rains, winds
and sun.
36. Effects of drought
Drought causes hunger, malnutrition and scarcity
of drinking water and also changes the quality of
water.
The drought indicates the worst situation and
initiation of desertification.
Drought also accelerates degradation of natural
resources.
Drought leads to large migration of people and
urbanization.
37. Conflicts over water
Water is so essential for our existence and is
fast becoming a scarce resource.
Freshwater is considered to be the most
environmental issue of this century.
Nearly 1.2 billion people do not have access
to safe drinking water
38. Causes of water conflicts
Conflict through use
a) international conflicts
India-pakistan->Indus
Mexico- USA->Colorado river
Iran – iraq -> Shatt-al- Arab water.
India- Bangladesh-> Bhramaputra river.
39. b) National conflicts
Sharing of Cauvery water- Karnataka&
Tamil nadu.
Sharing of Krishna water- Karnataka &
Andhra Predesh.
Sharing of Siruveni water – Tamil nadu&
Kerala.
40. Construction of dams or power station
Hydroelectric power generation
Dams are built across the rivers
Conflict through pollution
Production of electricity and shipping
Rivers and lakes are also used for industrial
purpose.
Disposing of waste water and industrial
rubbish
41. MINERAL RESOURCES
Minerals are naturally occurring substances
having definite chemical composition and
physical properties
42. Formation of mineral deposits
Various biological processes
Mineral deposits are found due to the biological
decomposition of dead animals and organic
matters.
Minerals deposits are also formed due to the
concentration of minerals during cooling of molten
rock.
Mineral deposits are also formed due to
evaporation of sea water.
44. Uses and exploitation of
minerals
Minerals are used in a large number of ways in
everyday in domestic, agricultural, industrial
and commercial sectors.
Uses:
1.development of industrial plants and
machinery – iron,aluminium, copper.
2.construction, housing, settlements.- Iron,
aluminium, nickel
46. Classification of minerals
Minerals are classified into two ways based on
their composition and usage.
I) Based on Composition
Metallic minerals- iron, aluminium, copper,
zinc.
Non-metallic minerals- Quartz, feldspar,
dolomite, calcite
47. II).Based on Usage
Critical minerals- iron, aluminium, copper
and gold.
Strategic minerals- manganese, cobalt,
platinum and chromium
48. Mineral wealth of india
Iron
Coal
Manganese
Copper
Gold
Aluminium
Tin
Chromium
Limestone
Mica
Monazite
Petroleum
Lead and zinc
Precious stones
Magnesite
gypsum
49. Environmental effects
Most important environmental concern
arises from the extraction and processing of
the minerals during mining , melting,
roasting, etc.
Mining
Mining is the process of extraction of
metals from a mineral deposit.
50. Types of mining
a) Surface mining
b)Underground mining
– i)Open-pit mining
– ii)Dredging
– iii)Strip mining
51. Environmental damage
Devegetation and defacing of landscape
Groundwater contamination
Surface water pollution
Air pollution
Subsidence of land
52. Effects of over exploitation of
mineral resources
Rapid depletion of mineral deposits
Over exploitation of mineral resources leads to
wastage and dissemination of mineral deposits.
Over exploitation of mineral resources causes
environmental pollution.
Over exploitation needs heavy energy requirements.
53. Management of mineral resources
The efficient use and protection of mineral
resources
Modernization of the mining industries
Search for new deposit.
Re-use and Re-cycling of the metals.
54. Case studies
Mining and quarrying in Udaipur
About 200 open cast mining and quarrying
centers are found available in Udaipur, of
which 100 mining and quarrying centers are
illegal and involved in stone
mining(soapstone, building stone, rock
phosphate and dolomite.)
55. Mining in sariska tiger reserve
in aravalli range
North-west India covering-Gujarat,
Rajasthan, Haryana, Delhi.
The hill region is very rich in biodiversity
as well as mineral resources.
The sariska tiger reserve, in Aravalli series,
is very rich in wildlife and has enormous
mineral reserves like quartzite, marble and
granite.
56. Quarrying thorium and uranium in kanyakumari district
Indian Rare Earths Corporation is quarrying sands, which
is enriched with Uranium and Thorium, near the sea shore
in Manali, Kanyakumari District, It leads to the loss of
many coconut plantation and sea shore beauty.
Extraction of Aluminium
5.5 Tonnes of Bauxite
1.3 Tonnes of Coal
0.6 Ton of anode carbon
0.25 Ton of fuel oil
0.2 Ton of NaOH oil
57. Food Resources
Food is an essential requirement for the human
survival Each person has minimum food
requirement. The main components of food are
carbohydrates, fast, proteins, minerals, and
vitamins.
Types of food supply
Croplands – Rice, wheat, maize, barley , sugarcane,
potato.
Rangelands- Meat, milk, fruits,
Oceans- Fish, prawn, crab.
58. WORLD FOOD PROBLEMS:
Problems mainly under nutrition and malnutrition
Natural calamities:-famine, drought, earthquake, flood, gale, storm
Disease and medical facilities
Pest damage:-insects, bacteria, viruses, parasites consume 60% of world's food
production
Hunger
Population explosion in rural areas
Environmental pollution
Lack of water for irrigation
Less rainfall due to deforestation
Livestock overgrazing
Overfishing
59. Under nutrition and malnutrition
Nutritious
Under nutrition
Malnutrition
60. CHANGES CAUSED BY OVERGRAZING AND
AGRICULTURE:
Overgrazing:
Land degradation-leads to organically poor, dry, compacted soil
cannot be used for further cultivation
Soil erosion-cover of vegetation gets removed from soil
Loss of useful species-good quality grasses and herbs with high
nutritive value, when grazed lose even the root stocks which carry the
reserve food for regeneration get destroyed which gives raise to
secondary species like parthenium, Lantane, Xanthium etc
To prevent –match the forage supplement to the herd‟s
requirement.eg.Switch grass
61. Modern agriculture:
Damage to soil
Water contamination
Water scarcity
Global climate change
Water logging-results when soil is over irrigated
Soil salinity-increase plant productivity, interferes with water uptake by plants
Fossil fuels and pesticides produce air pollution
Impacts related to high yielding varieties:
Monoculture ie the same genotype is grown over vast areas. Disease spread
easily
Micronutrient imbalance e.g Zinc deficiency-affect soil productivity
62. ENERGY RESOURCES
Growing energy needs: Population explosion,
Luxurious life, Industries, Agriculture, mining,
transportation, lighting, cooling, heating, building
all need energy. Fossil fuels like coal, oil, natural
gas produce 95% of energy
63. Sources of energy
Primary
Renewable energy-resources which can be
enerated continuously in nature and are in
exhaustible and can be used again endlessly.
Wood, Tidal, Solar, wind, hydropower, biomass,
biofuel, geothermal, hydrogen
Non – renewable energy- Resources which have
accumulated in nature over a long span of time and
cannot be quickly replenished when exhausted.
Coal, petroleum, natural gas
65. Energy renewable
Advantages
1. Wide availability
2. Low cost
3. Decentralized power production
4. Low pollution
5. Available for the future
66. Disadvantage
1. Unreliable supply
2. Produced in small quantity
3. Difficult to store
4. Cost more
67. Energy non renewable
Advantage
1. Available in high concentrated form
2. Easy to store
3. Reliable supply
4. Lower cost
Disadvantage
1.highly pollution Available only in few places
High running cost Limited supply and will one day
get exhausted
68. Solar energy:
Total energy from sun per year-35,000 times the
energy used by man
Used to run car, power plants and spaceships
Energy harvesting devises:
Solar heat collectors
Solar cells „
Solar cooker
Solar water heater
Solar furnace
Solar power plants
71. LAND RESOURCE
Land is the most important and valuable
resources for mankind as it provides food, fibre,
wood, medicine and other biological materials
needed for food. Soil is the mixture of
inorganic materials(rocks and minerals) and
organic materials(dead animals and plants)
72. Uses of land resources
Land provide ,food, wood, minerals, etc for us
Land nurtures the plants and animals that provides
our food and shelter
Land is used as watershed or reservoir
Land act as a dust bin for most of the wastes,
created by modern society.
Land is useful for construction of buildings,
industries.
73. Land Degradation:
Land degradation is the process of deterioration of soil or
loss of fertility of the soil.
Harmful effects of land degradation
The soil texture and soil structure are deteriorated
Loss of soil fertility, due to loss of invaluable nutrients
Increase in water logging, salinity, alkalinity and acidity
problems.
Loss of economic social and biodiversity
74. Causes of land degradation
Population
Urbanization
Fertilizers and pesticides
Damage of top soil
75. Soil erosion:
Soil erosion is the process of removal of
superficial layer of the soil from one place to
another. Soil erosion also removes the soil
components and surface liter.
Types of soil erosion
i) Normal erosion
ii) Accelerated erosion
76. Harmful effects of soil erosion
Soil fertility is lost because of loss of top soil layer.
Loss of its ability to hold water and sediment.
Sediment runoff can pollute water and kill aquatic life.
Causes of soil erosion
i) water
ii) wind
iii) Biotic agents
iv) landslides
v) Construction
77. Control of soil erosion
Conservational till farming
Contour farming
Terracing
Alley cropping
Wind breaks or shelter belts
78. desertification
Desertification is a progressive destruction or
degradation of arid or semiarid lands to desert.
Causes of desertification
Deforestation
Over grazing
Water management
Mining and quarrying
Climate change
Pollution
79. landslides
Landslides are the downward and outward
movement of a slope composed of earth materials
such as rock, soil, artificial fills.
Harmful effects of landslides
Land slides increases the turbidity of nearby
streams, thereby reducing their productivity.
Destruction of communication links
Loss of habitat and biodiversity
Loss of infrastructure and economic loss.
80. Causes of landslides
Removal of vegetation
Underground mining
Transport
Addition of weight
Ground water level
81. ROLE OF INDIVIDUAL IN CONSERVATION OF
NATURAL RESOURCES:
Natural resources-
forest,water,soil,food,mineral and energy
Overuse of these resources cause problems
82. Conserve water:
Don‟t keep water taps running
Install water saving toilets
Check forwater leaks
Reuse soapy water
Use drip and sprinkling irrigation
Conserveenergy
Turn off lights,fan when not in use
Use solarcooker for cooking
Try riding bicycle
83. Protect soil:
Don‟t uproot plants
Grow grass which binds soil andprevent erosion
Make compost
Use green manure
Don‟t over irrigate
Use mixed cropping