What is desertification
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Desertification is the process by which fertile land becomes desert due to drought, deforestation or inappropriate agriculture. It can be controlled by stopping deforestation, planting new trees and using irrigation. Desertification affects plants and animals by depriving them of water and food. It can be prevented by conservation efforts like reforestation and establishing protected areas.
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Desertification is the degradation of land in dryland areas caused by various factors including climate change and human activities. Nearly half the world's land is drylands, with overgrazing, overcultivation, deforestation, and drought being the main causes of desertification. The removal of vegetation leaves soil exposed to wind and water erosion, reducing soil fertility and agricultural productivity. This in turn can lead to food shortages, malnutrition, and migration from affected areas. Solutions include sustainable land management practices, drought-resistant crops, afforestation programs, and improved access to water resources.
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The document discusses the causes and effects of deforestation. It identifies the main causes as timber production, cut and blaze farming, deforestation for grazing land, and using forests for firewood. Deforestation negatively impacts the environment, atmosphere, hydrology, soil, biodiversity, and human economies. Reforestation efforts include reducing emissions, sustainable farming practices, monitoring deforestation, and increasing protected areas.
Acidity of Clouds: Acid Rain!!
Acid Rain is the burning issue of present world. It is must to know what this issue is, what are it's effects and what can be done to resolve the steps.
The slide contains:
1. Basic Introduction
2. Cause of Acid Rain
3. Who discovered Acid rain?
4. Effects of Acid Rain
5. Preventive measures of acid rain
This presentation will be useful for the high school students for making assignments on this topic, or for creative awareness.
The sources of this slides are:
howstuffworks.com
google.com
wikipedia etc.
This slide show contains interactive and animated clip arts to keep it attractive and not merely a theoretical one.
Do leave the feedback. Want similar presentations? Leave comments. (This is the presentation I performed in college for awareness.The contents are summed up in the slide from various recognized and trustworthy sources. The author don't claim the originality of the charts and characters of the presentation. The contents are meant for educational and awareness purpose only)
Ozone Layer
The ozone layer in the stratosphere absorbs most UV light from the sun. Ozone is formed when oxygen molecules are split by UV light or lightning, then join with other oxygen molecules to form ozone (O3). Chlorofluorocarbons (CFCs) used in refrigerants and air conditioners were depleting the ozone layer as they take 10-20 years to break down in the stratosphere, and each chlorine atom can destroy 100,000 ozone molecules. This was causing seasonal thinning of the ozone layer over Antarctica, known as the ozone hole. Thinning of the ozone layer allows more harmful UV-B radiation to pass through, which can damage DNA and
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Oxygen Farming
The La Reserva Forest Foundation is a non-profit located in Costa Rica that works to restore and preserve native tropical forests through reforestation efforts. Their headquarters gives tours of regenerating forests and seedling nurseries. They began creating biological corridors between forest patches by planting trees, vines, and shrubs to encourage regrowth and allow wildlife to safely travel between forest areas. After cattle grazing ended on their land, the area rapidly regenerated into forest within just a few years, demonstrating how restoration is possible on a large scale. The document encourages supporting the foundation's reforestation project to help offset carbon emissions and restore habitats.
Report.grace
This report provides an overview of manatees including their diet, habitat, appearance, reproduction, statistics on population, and efforts to save the endangered species. Manatees are herbivorous marine mammals that live in warm coastal waters around the world. They face threats of habitat loss, water pollution like red tide algae blooms, and boat collisions. Conservation efforts aim to protect manatees and reverse declining populations through captive breeding programs and public education.
Adaptation ks4
The document discusses factors that affect population sizes and how organisms adapt to different environments. It explains that population numbers can change due to competition, predation, migration, disease, and natural disasters. Adaptation describes how plants and animals survive in various environments by coping with aspects like temperature, competing for resources, and avoiding predators. Examples are given of adaptations in arctic and desert habitats, such as thick fur and fat for insulation in polar bears and long taproots and fleshy stems in cacti for water storage.
Adaptation ks4 001
The document discusses factors that affect population sizes and how organisms adapt to different environments. It explains that population numbers can change due to competition, predation, migration, disease, and natural disasters. Adaptation describes how plants and animals survive in various environments by coping with aspects like temperature, competing for resources, and escaping predators. Examples are given of adaptations in arctic, desert, and other habitats, such as thick fur for polar bears and long taproots for cacti.
Scientific report
This document outlines a school exchange program between a French school in Parentis and a German school in Frankfurt from April 2nd to 9th. As part of the program, students will study ecosystems on the Atlantic coast through field work, lab work, and firm visits. The focus will be on biodiversity and environmental protection. Activities included identifying different types of shells, examining how dunes are formed, analyzing tide marks, and learning about human influences on the landscape from the ONF organization. The overall goal is for students to better understand European ecosystems as part of a Comenius exchange program.
Weathering and-erosion-
Erosion and weathering are major forces that shape the Earth's surface. Erosion is when the Earth's surface is worn away by forces like moving water, wind, oceans, and glaciers. Weathering is when rocks are broken down into smaller pieces through various processes like freezing and thawing of water, plant roots, and chemical reactions. Understanding these forces helps explain landforms like canyons, shorelines, and how soil erosion impacts food production.
Erosion and Weathering
Erosion and weathering are major forces that shape the Earth's surface. Erosion is when the Earth's surface is worn away by forces like moving water, wind, oceans, and glaciers. Weathering is when rocks are broken down into smaller pieces through various processes like freezing and thawing of water, plant roots, and chemical reactions. Understanding these forces helps explain landforms like canyons and shorelines. Soil erosion from forces like water and wind is important because humans rely on soil for food production.
Amazon Rainforest Presentation
The document discusses the importance and threats facing the Amazon rainforest. It is home to over 50,000 species per square mile and provides oxygen and houses cures for diseases. However, deforestation is destroying the rainforest at a rate of 1.5 acres per second through logging, mining, cattle ranching, and other commercial activities. This is having devastating impacts on the environment and indigenous communities who call the forest home. Conservation groups are working to protect the rainforest but more must be done to combat deforestation and ensure the rainforest's survival.
grade 3 Natural disaster
Natural disasters like floods, droughts, earthquakes, and tsunamis can cause significant damage. Floods occur due to heavy rainfall and overflowing rivers, affecting homes, farms and infrastructure. Droughts happen when there is not enough rain over long periods, drying up land and crops. Earthquakes are caused by the movement of tectonic plates underground, sometimes resulting in collapsed buildings and injuries. Tsunamis are large sea waves triggered by underwater earthquakes that can destroy coastal areas when they crash onto land. Governments provide relief efforts like food, water, shelter and medical aid to help communities recover from these disasters.
Amur Leopard Extinction
- The Amur leopard is critically endangered, with an estimated population of only 60-70 individuals remaining in the wild. They are found primarily in the temperate forests of Russia.
- The temperate forests where Amur leopards live have short, harsh winters with heavy snowfall. The soil is poor in nutrients and trees take a long time to decompose, limiting the growth of new trees.
- Survival of the Amur leopard depends on conservation efforts to protect the species from extinction.
Essay On Yosemite Trip
The document describes the author's experience on a Yosemite trip when they were 14 through their high school years. It talks about the hiking they did in Yosemite, which was difficult at first but they grew to love the outdoors. Later, the author developed anxiety and health issues after their brother passed away, but was able to recover after treatment. The experience had a big impact on their life.
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What is desertification
- 1. What is desertification? The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.