Coe tail presentation 2
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The document discusses different types of erosion including wind erosion, water erosion, sheet and rill erosion, gully erosion, and slumping of land. It notes that hundreds of years are needed to replenish topsoil, and that the Great Plains of the US has lost 1/3 of its topsoil in the 150 years since the start of farming. Unless addressed, erosion threatens to cause mass starvation as only 15-20 centimeters of topsoil stands between much of the world and food insecurity.
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Soil erosion conservation
A presentation on soil erosion conservation consisting of causes of erosion, need for soil conservation along with various prevention techniques for soil conservation.
Water
While the total amount of water on Earth remains constant, water is constantly moving around through the water cycle. Surface water, found in rivers, lakes, and streams, makes up only 0.25% of the total water on Earth but is extremely important for land animals and humans. Underground water, located deep below the Earth's surface and deposited over millions of years from rain and snow, also provides a supply of fresh water nearly anywhere on Earth.
What is hydrosphere?
The hydrosphere includes all liquid water on Earth, such as oceans, seas, lakes, rivers, groundwater, surface water and water vapor in the air. It covers 70% of the Earth's surface. The hydrosphere is home to many plants and animals and includes water in its three main forms: groundwater beneath the Earth's surface, surface water on land and in oceans, seas and lakes, and water vapor in the air.
Erosion
Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow and transported to other locations. There are different types of erosion including wind, water, gravitational, and coastal erosion. Excessive erosion causes problems such as desertification, decreases in agricultural productivity, sedimentation of waterways, and ecological collapse.
Water erosion
Water erosion shapes Earth's surface. Moving water is the major agent of erosion and has formed landforms over time. Runoff from rain carries soil particles and causes sheet and rill erosion. Rills grow into gullies which join to form streams and rivers. Rivers erode the land to form V-shaped valleys and deposit sediments in flood plains and deltas. Waterfalls form where a hard rock meets a softer rock downstream as the softer rock erodes faster. Flood plains are wide river valleys that are flooded during heavy rains, depositing fertile soils.
Why is australia so flat and dry
This document provides information about Australia's physical geography in 3 paragraphs. [1] It notes that Australia is the 6th largest country by area, very flat and dry due to long geological stability and weathering. [2] It explains that Australia's location in the center of its tectonic plate and lack of orographic rainfall contribute to its dry climate. [3] It discusses how the prevailing winds and ocean currents further reduce rainfall, and how this physical geography profoundly impacts Australia's environments, populations, agriculture, and more.
Soil erosion
as a result of erosion over the past 40 years,30% of the worlds arable land has become unproductive.if we want food ,prevent soil erosion dude.
The hydrosphere
The document discusses the hydrosphere, which is the global mass of water on Earth that is continually circulating between oceans, atmosphere, and land. It notes that the oceans hold about 97% of the planet's water. Precipitation falls as rain, snow, hail or sleet and runs off into water sources or infiltrates the ground. Fresh water sources include surface water from precipitation and groundwater stored underground in aquifers and soil. The water table marks the top of saturated ground containing over 40 times as much water as all other freshwater sources combined. The document emphasizes the significance of water for civilization and public health.
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Soil erosion conservation
A presentation on soil erosion conservation consisting of causes of erosion, need for soil conservation along with various prevention techniques for soil conservation.
Water
While the total amount of water on Earth remains constant, water is constantly moving around through the water cycle. Surface water, found in rivers, lakes, and streams, makes up only 0.25% of the total water on Earth but is extremely important for land animals and humans. Underground water, located deep below the Earth's surface and deposited over millions of years from rain and snow, also provides a supply of fresh water nearly anywhere on Earth.
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Erosion
Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow and transported to other locations. There are different types of erosion including wind, water, gravitational, and coastal erosion. Excessive erosion causes problems such as desertification, decreases in agricultural productivity, sedimentation of waterways, and ecological collapse.
Water erosion
Water erosion shapes Earth's surface. Moving water is the major agent of erosion and has formed landforms over time. Runoff from rain carries soil particles and causes sheet and rill erosion. Rills grow into gullies which join to form streams and rivers. Rivers erode the land to form V-shaped valleys and deposit sediments in flood plains and deltas. Waterfalls form where a hard rock meets a softer rock downstream as the softer rock erodes faster. Flood plains are wide river valleys that are flooded during heavy rains, depositing fertile soils.
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Soil erosion
as a result of erosion over the past 40 years,30% of the worlds arable land has become unproductive.if we want food ,prevent soil erosion dude.
The hydrosphere
The document discusses the hydrosphere, which is the global mass of water on Earth that is continually circulating between oceans, atmosphere, and land. It notes that the oceans hold about 97% of the planet's water. Precipitation falls as rain, snow, hail or sleet and runs off into water sources or infiltrates the ground. Fresh water sources include surface water from precipitation and groundwater stored underground in aquifers and soil. The water table marks the top of saturated ground containing over 40 times as much water as all other freshwater sources combined. The document emphasizes the significance of water for civilization and public health.
Water in the earths processes vocabulary2
The water cycle describes the continuous movement of water on, above, and below the Earth's surface, driven by energy from the sun. Water evaporates from oceans, lakes, and soil into the atmosphere, where it condenses to form clouds and precipitates as rain or snow back to the Earth. Some precipitation is absorbed into the ground to become groundwater, while some runs into streams, rivers, and lakes before eventually returning to the oceans, completing the cycle. The water cycle is crucial for sustaining life on Earth.
Soil erosion by wind
Wind erosion can damage crops, buildings, and infrastructure by removing topsoil and nutrients. It can reduce crop yields and negatively impact human health. Soil movement is initiated by wind turbulence and velocity above certain thresholds. Fine particles are transported long distances by wind and deposited when velocities decrease due to obstructions. Controlling wind erosion requires maintaining ground cover through crops, windbreaks, contour plowing, and managing soil moisture.
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This is our group work in our science subject. We are assigned to make a power point presentation in order for us to understand and share our knowledge in the given chapter. We hope that you learned from the presentation the we have presented, thank you and good luck!
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The earth’s hydrosphere
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The water cycle describes the continuous movement of water on, above, and below the surface of the Earth. Water is evaporated from bodies of water by heat from the Sun, rises into the atmosphere as water vapor, cools and condenses to form clouds, and falls back to the Earth's surface as precipitation. The energy from the Sun and the force of gravity drive this cyclic movement of water between the atmosphere and the Earth's surface through the processes of evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. This cycle is essential for maintaining life on Earth.
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Types of water
Deep-sea waters are found below the earth's surface and are separated from it. They are not renewable and often have high mineral content. There are different types depending on their origin, such as relict waters from ancient geological eras, sedimentary waters trapped in rock formations, or juvenile waters formed from volcanic activity.
Surface water is found on the planet's surface in streams, rivers, lakes, wetlands or oceans. It is replenished by precipitation and groundwater but lost through evaporation, plant transpiration, human use, or discharge into seas.
Groundwater is located beneath the surface in soil and rock pores and fractures. It is recharged from and flows toward the surface, often emerging in
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Soil erosion is a naturally occurring process that affects all landforms and can occur slowly over time or rapidly, causing serious topsoil loss. There are four main types of erosion: sheet erosion, gully erosion, channel erosion, and rill erosion. Soil erosion is caused by both natural processes like wind and water flowing downhill, as well as human activities such as overcropping, deforestation, and overgrazing. Problems from soil erosion include loss of topsoil, damage to fields, decreased plant productivity, and desertification. Remedies include avoiding overgrazing, conserving wetlands, terracing, and encouraging water infiltration.
Hydrological cycle
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2.soil.d pentecostes, aga c.
Soil erosion is the removal of topsoil from the land surface by water or wind. The loss of soil can reduce crop production and damage drainage networks. It can also cause problems off-site through sedimentation of waterways. The main types of water-induced soil erosion are splash erosion, sheet erosion, rill erosion, and gully erosion. Wind erosion involves deflation and abrasion, moving particles by surface creep, saltation, and suspension. Factors like precipitation, soil properties, vegetation cover, slope angle, and human activities influence erosion rates. Methods to control erosion include maintaining vegetative cover, using windbreaks and contour plowing, and preventing deforestation and overgrazing.
Soil erosion
This document discusses soil erosion, defining it as the loss of soil through various natural and human-accelerated factors. It identifies water and wind as the main agents of erosion, describing a three phase process of detachment, transportation, and deposition. Soil erosion is classified into geological erosion from natural forces and accelerated/abnormal erosion influenced by human activities like deforestation, overgrazing, and faulty agricultural practices. The problems caused by erosion include damage to coastlines, health hazards, costs of water purification, and siltation of irrigation systems.
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This document discusses the hydrosphere, which is the water sphere that surrounds the Earth. The hydrosphere comes from the Latin word "hydro" meaning water, and it covers about 71% of the Earth's surface. Water is essential for life as it makes up 75% of living cells and allows chemical reactions to occur. The hydrosphere also regulates climate, provides habitat, and is important for human and industrial use. However, water pollution and misuse threaten the hydrosphere. We must avoid pollution and misusing water to protect this critical part of our planet.
Drought
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Mainguet M. & Dumay F., 2011. Fighting wind erosion. one aspect of the combat against desertification. Les dossiers thématiques du CSFD. N°3. May 2011. CSFD/Agropolis International, Montpellier, France. 44 pp. - Wind erosion—alone or combined with other physical or socioeconomic causes—is a mechanism that may induce desertification, i.e. severe or irreversible degradation of water and soil resources. Now that this phenomenon is better understood, the model of the 1970s based on three distinct stages (causes, mechanisms, consequences) has been discarded, in view of the many feedbacks and insidious links generated by wind erosion. Timely detection of wind erosion onset thresholds with remote sensing tools (satellite images and aerial photographs), and spatial delimitation and positioning of the phenomena observed are essential to be able to efficiently combat the damaging effects of wind erosion. No field operations can be effective without prior knowledge of wind erosion mechanisms at the land-atmosphere interface.
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The water cycle describes the continuous movement of water on, above, and below the Earth's surface, driven by energy from the sun. Water evaporates from oceans, lakes, and soil into the atmosphere, where it condenses to form clouds and precipitates as rain or snow back to the Earth. Some precipitation is absorbed into the ground to become groundwater, while some runs into streams, rivers, and lakes before eventually returning to the oceans, completing the cycle. The water cycle is crucial for sustaining life on Earth.
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Reportinscience bautista-regala
This is our group work in our science subject. We are assigned to make a power point presentation in order for us to understand and share our knowledge in the given chapter. We hope that you learned from the presentation the we have presented, thank you and good luck!
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Created by María Jesús Campos, Social Studies, Geography and History teacher in a bilingual section in Madrid
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The Earth's hydrosphere consists primarily of oceans containing salt water, but also includes smaller amounts of fresh water in lakes, rivers, and groundwater. The hydrosphere participates in the global hydrologic cycle along with the cryosphere, atmosphere, and biosphere. Earth's water has played a major role in influencing climate, landscapes, atmospheric composition, and the evolution of life since the planet was formed. Oceans make up over 97% of the total water volume on Earth.
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The water cycle describes the continuous movement of water on, above, and below the surface of the Earth. Water is evaporated from bodies of water by heat from the Sun, rises into the atmosphere as water vapor, cools and condenses to form clouds, and falls back to the Earth's surface as precipitation. The energy from the Sun and the force of gravity drive this cyclic movement of water between the atmosphere and the Earth's surface through the processes of evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. This cycle is essential for maintaining life on Earth.
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The document summarizes key aspects of Earth's hydrosphere and hydrologic cycle. It describes the hydrosphere as including all of Earth's water found in oceans, glaciers, streams, lakes, soil, groundwater, and air. It also notes that Europa and possibly Ganymede and Enceladus may have subsurface oceans. Additionally, it provides details on the distribution and movement of water between the oceans, atmosphere, biosphere, lithosphere, and the water cycle which traces this movement between stores and spheres.
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Deep-sea waters are found below the earth's surface and are separated from it. They are not renewable and often have high mineral content. There are different types depending on their origin, such as relict waters from ancient geological eras, sedimentary waters trapped in rock formations, or juvenile waters formed from volcanic activity.
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Soil erosion is a naturally occurring process that affects all landforms and can occur slowly over time or rapidly, causing serious topsoil loss. There are four main types of erosion: sheet erosion, gully erosion, channel erosion, and rill erosion. Soil erosion is caused by both natural processes like wind and water flowing downhill, as well as human activities such as overcropping, deforestation, and overgrazing. Problems from soil erosion include loss of topsoil, damage to fields, decreased plant productivity, and desertification. Remedies include avoiding overgrazing, conserving wetlands, terracing, and encouraging water infiltration.
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Soil erosion is the removal of topsoil from the land surface by water or wind. The loss of soil can reduce crop production and damage drainage networks. It can also cause problems off-site through sedimentation of waterways. The main types of water-induced soil erosion are splash erosion, sheet erosion, rill erosion, and gully erosion. Wind erosion involves deflation and abrasion, moving particles by surface creep, saltation, and suspension. Factors like precipitation, soil properties, vegetation cover, slope angle, and human activities influence erosion rates. Methods to control erosion include maintaining vegetative cover, using windbreaks and contour plowing, and preventing deforestation and overgrazing.
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This document discusses soil erosion, defining it as the loss of soil through various natural and human-accelerated factors. It identifies water and wind as the main agents of erosion, describing a three phase process of detachment, transportation, and deposition. Soil erosion is classified into geological erosion from natural forces and accelerated/abnormal erosion influenced by human activities like deforestation, overgrazing, and faulty agricultural practices. The problems caused by erosion include damage to coastlines, health hazards, costs of water purification, and siltation of irrigation systems.
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This document discusses the hydrosphere, which is the water sphere that surrounds the Earth. The hydrosphere comes from the Latin word "hydro" meaning water, and it covers about 71% of the Earth's surface. Water is essential for life as it makes up 75% of living cells and allows chemical reactions to occur. The hydrosphere also regulates climate, provides habitat, and is important for human and industrial use. However, water pollution and misuse threaten the hydrosphere. We must avoid pollution and misusing water to protect this critical part of our planet.
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This document discusses land as an important natural resource and various causes of land degradation. It notes that humanity's development has damaged land resources through issues like soil erosion, deforestation, overgrazing, and excessive population growth. Specific causes of soil erosion discussed include water erosion processes like sheet, rill, and gully erosion, as well as wind erosion processes like saltation, suspension, and surface creep. Other issues covered include landslides, desertification, and water logging and salinity issues caused by excessive irrigation. The document emphasizes the importance of sustainable land management given India's large population and need for food security.
Soil Erosion Defination causes effects .pptx
Soil erosion is the process by which the top layer of soil is worn away by water, wind, or tillage. It occurs naturally but human activities like agriculture, grazing, logging, and mining have accelerated the process. Soil erosion reduces soil fertility and can lead to loss of arable land, pollution of waterways, air pollution, and desertification if left unchecked. Methods to prevent soil erosion include planting trees, adding mulch, using fibre logs, and improving drainage systems.
Powerpoint presentation of jelmarie
Soil erosion occurs naturally through processes like water and wind but is exacerbated by human activities like deforestation, overgrazing, overcropping, agricultural disturbance, logging, farming, cattle ranching, surface mining, strip mining, and urbanization. The effects of soil erosion include the deterioration of agricultural lands, increased flooding, reduced water supply, destruction of infrastructure, and the depletion of wildlife and natural resources. While advances in soil management have helped maintain crop yields, soil erosion remains a significant problem that often only becomes apparent when property is damaged and productive soil is lost.
Water and Wind Erosion.pptx
Water and wind erosion are natural processes that can cause the loss and movement of soil and sediment. Here's a brief description of each:
Water erosion: Water erosion occurs when rainfall or runoff flows over the land, picking up and carrying away soil particles. The intensity and duration of rainfall, the slope of the land, and the presence or absence of vegetation all contribute to the severity of water erosion. It can lead to the formation of gullies, rills, and streambank erosion, as well as the loss of fertile topsoil. Water erosion can have detrimental effects on agricultural lands, causing decreased soil fertility, reduced crop productivity, and sedimentation in water bodies.
Wind erosion: Wind erosion occurs when strong winds blow over bare or poorly protected soil surfaces, lifting and transporting soil particles. It typically affects areas with dry or arid climates and exposed soils lacking vegetation cover. Wind erosion can result in the formation of sand dunes, the removal of topsoil, and the deposition of sediment in unwanted areas. It can have significant consequences for agricultural productivity, damaging crops, reducing soil fertility, and causing desertification in severe cases.
Both water and wind erosion can be exacerbated by human activities such as deforestation, improper land management practices, overgrazing, and construction without adequate soil conservation measures. Effective erosion control measures include the implementation of erosion control structures, contour plowing, terracing, planting windbreaks or shelterbelts, establishing cover crops, and implementing proper water management techniques to minimize runoff.
Erosion, deposition, soil intro
This document discusses different types of erosion and deposition. It begins with definitions of erosion as the movement of sediment from one place to another, and deposition as dropped sediment. It then examines several specific types of erosion in more detail:
- Stream bank erosion occurs along streams and rivers due to running water and burrowing animals. Planting vegetation or using concrete mats can help control this type of erosion.
- Topsoil erosion involves the wearing away of the top layer of soil by water, wind, and gravity. Farming practices like no-till, contour plowing, and cover crops can prevent this type of erosion, which is important because topsoil contains nutrients and takes a long time to form.
-
Soil Erosion Essay
Soil erosion from farms can have negative environmental impacts by reducing nutrient-rich topsoil, increasing sedimentation in waterways which harms aquatic ecosystems, and allowing chemicals from fertilizers and pesticides to pollute drinking water sources as they run off from fields. Prevention methods for farms include maintaining ground cover through no-till practices and buffer zones, while damage control involves restoring eroded lands and setting limits on chemical usage to protect water quality.
Soil pollution by Komal Bhardwaj
This document discusses various types of soil pollution caused by human activities. It outlines four major impacts: loss of biodiversity due to deforestation for agriculture and development; soil erosion from lack of vegetation cover exacerbated by wind and water; increased acidity and alkalinity altering soil fertility from improper agricultural practices; and land pollution through waste deposition in landfills and dumps that contaminates soil and groundwater through leaching. The vital but thin topsoil layer that supports life is being degraded by human uses of land including agriculture, mining, deforestation, and waste disposal.
1 Soil Water Erosion.pptx
This document provides an introduction and overview of soil and water conservation. It discusses how soil and water are important natural resources for agriculture but are being degraded in India. Soil erosion occurs naturally but is exacerbated by human activities like cultivation. The key forms of soil erosion by water are splash erosion, sheet erosion, rill erosion, gully erosion, and stream/coastal erosion. The Universal Soil Loss Equation is presented as a way to estimate average annual soil loss. Biological control measures like contour cultivation, strip cropping, intercropping, and conservation tillage are discussed as ways to reduce soil erosion.
Rearing technique of lac insect and their management
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Presentacion soil
SOIL – relatively thin surface layer of the Earth’s crust consisting of mineral and organic matter tha is affected by agents such as weather, wind, water, and organisms.
Natural resource.
Lithosphere
The lithosphere is the rigid outermost layer of Earth composed of the crust and upper mantle. It exists in two types - oceanic lithosphere associated with ocean crust, and continental lithosphere associated with continental crust.
Soil is a natural resource that takes thousands of years to form. It is made up of weathered rock particles, living organisms, and dead organic matter. Soil degradation occurs through construction, acidification, salinization, and pollution.
Soil erosion is the removal of the fertile topsoil layer by water and wind. It can be caused by deforestation and unsustainable farming practices. Methods to prevent soil erosion include increasing vegetation cover through practices like crop rotation, reforestation,
HUMAN ACTIVITIES THAT AFFECT EARTH’S LAND AND WATER.pptx
Human activities like deforestation, improper garbage disposal, and overuse of fertilizers and pesticides can harm Earth's land, water, and air in several ways:
1) Cutting down trees without replanting leads to forest denudation, which increases the risk of soil erosion and landslides during heavy rains.
2) Throwing garbage improperly pollutes soil and water, reducing the soil's fertility and making the water unsafe.
3) Overuse of chemicals from farming contaminates soil and water supplies.
4) Smoke from vehicles, factories, and burning of plastics and garbage pollutes the air.
5) All of this pollution can spread diseases and harm both humans
Reflective essay on Soil Erosion
This document discusses soil erosion, its causes, impacts, and potential solutions. Some key points:
- Soil erosion is caused by factors like deforestation, wind, and water, which can wash away topsoil and nutrients. Deforestation is a major driver as it removes vegetation that anchors soil.
- Impacts of erosion include decreased soil quality and crop yields, increased production costs, water pollution, and flooding due to sedimentation. Eroded soil may deposit downstream and damage habitats.
- About 38% of the world's cropland is degraded and 15% of total land area has been degraded by human activities like poor farming practices, accelerating the loss of fertile topsoil.
Land pollution
This document discusses soil and various threats to soil quality. It defines soil pollution as the addition of substances that negatively impact the physical, chemical, and biological properties of soil and reduce its productivity. Several threats to soil are outlined, including soil pollution from industrial effluents, soil erosion from water and wind, salination from poor drainage and irrigation, water logging, shifting cultivation, dumping of solid wastes, desertification, urbanization, and mismanagement through improper use. The document emphasizes that soil supports life and produces food but is undergoing degradation and loss of productive land due to various human and environmental factors.
Essay On Soil Conservation
Roosevelts Soil Erosion
Soil Conservation
Soil Conservation
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Farming And Soil
Farming practices have increased food production but also have negative environmental impacts. The use of fertilizers and manure can cause unpleasant smells, pollution of rivers and lakes when they run off farms, and algal blooms that kill fish. Farming can also lead to soil erosion as crops are harvested and the soil is exposed, stealing nutrients and leaving topsoil vulnerable to being blown or washed away, costing millions of tons of valuable soil each year. Desertification is a risk if erosion and drought combine to deplete the soil.
The Dust Bowl
The Dust Bowl was a period in the 1930s where severe dust storms damaged the environment of the US prairies. The dust storms were caused by extreme winds that picked up the loose soil left exposed after years of over-farming during a drought. Farmers had plowed up millions of acres of grassland for wheat farming due to high prices and new technologies. The deadly dust storms choked cattle and people, causing 60% of residents to flee the region and many to develop dust pneumonia from constant dust exposure. The dust made farming impossible, putting many out of business during the Great Depression.
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Rearing technique of lac insect and their management
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Coe tail presentation 2
- 1. Let’s look at Wind Erosion Erosion where it starts Erosion – The movement of topsoil and soil Iitter) from one place to another by water and wind (Natural and human causes)
- 2. •Uncovered soil •Plowed soil •Wind “It takes hundreds of years to replenish 2.5 cm of topsoil.” Miller GT
- 3. Water Erosion – loss of soil – from farm fields Great plans of the US has lost 1/3 of its topsoil in 150 years since the start of farming.
- 4. Sheet and Rill Erosion “The plains of the US has lost 1/3 of its topsoil in 150 years since first plowed.” Miller, GT
- 5. Rivers carry sediment, eroded soil, especially when storms occur…
- 6. Here’s erosion at the end…… An estuary from space….. Notice…. What are the implications of this?
- 7. Gully Erosion “15 – 20 centimeters of topsoil is all that stands between much of the world and mass starvation.” Miller, GT
- 9. Erosion in Ethiopia “15 – 20 centimeters of topsoil is all that stands between much of the world and mass starvation.” Miller, GT
- 10. Erosion, can be slow, inexorable or a Quick Slumping of land
- 11. Slumping of land
- 12. Slumping of land
- 13. Slumping of land…….can be massive
- 14. Slumping of land….from the air.
- 15. Slumping of land…..all over the place, from the air. Notice the effect of deforestation.
- 16. Erosion of soil from the air
- 17. Erosion of soil from the air Montana farm field
- 18. With its rivers running blood red and staining the surrounding Indian Ocean, astronauts have remarked that it looks as if Madagascar is bleeding to death.