plants the land becomes desertlike and unable to support life. CAUSES OF SOIL EROSION Erosion occurs when farming practices are not compatible with the fact that soil can be washed away or blown away. These practices are: Overstocking and overgrazing Inappropriate farming techniques such as deep ploughing land 2 or 3 times a year to produce annual crops Lack of crop rotation Planting crops down the contour instead of along it. Water erosion Water erosion causes two sets of problems:
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INTRODUCTION Page 4 - 6 2. Causes of Watershed Degradation Page 7 2.1 Land degradation 7 - 8 2.2 Deforestation 8 2.3 Removal of vegetation 8 2.4 Shifting cultivation without adequate fallow periods 9 2.5 Overgrazing 9 2.6 Poor farming methods 9 - 10 2.7 Cultivation of marginal lands 10 - 11 2.8 Improper crop rotations 11 2.9 Unbalanced fertilizer use 11 2.10 Pests and diseases 11 3. Underlying causes of
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erosion. And as land loses its fertile soil‚ agricultural producers move on‚ clear more forest and continue the cycle of soil loss. Overgrazing The conversion of natural ecosystems to pasture land doesn’t damage the land initially as much as crop production‚ but this change in usage can lead to high rates of erosion and loss of topsoil and nutrients. Overgrazing can reduce ground cover‚ enabling erosion and compaction of the land by wind and rain.. This reduces the ability for plants to grow and
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Causes of floods Flood is overflow of the huge amount of water onto the normally dry land. Flood occurs when the overflowing water submerges land and causes deluge. It is a cruel and violent expression of water. Catastrophic floods are the floods that are caused by some significant and unexpected events‚ for instance dam breakages. Heavy rainfalls are one of the major causes of floods. The level of water in rivers or lakes rises due to heavy rainfalls. When the level of water rises above the
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Wolf Packs: Wolves are one of the most intelligent and impressive animals in the world. They are highly social animals that depend mostly on each other to survive and thrive. Wolf packs can sometimes swell up to 20 or more members! However‚ having many members is not always an advantage. It means that they have to provide even more food to keep the pack going. Every single wolf in a pack has a job. Every wolf has a status and something that they should be busy with. If one was to look at it in
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There is More to Your Burger Than Meats The Eye: Cattle Ranching and It’s Increasing Affect on Deforestation One may not look at the hamburger in their hands and automatically think‚ “What was done to our environment in order to make this delicious piece of meat?” but it really is a question that any meat consumer should consider. Believe it or not‚ eating that one hamburger indirectly causes the rate of deforestation to increase every single day! It actually is quite simple
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Forced migration occurs when the individual or household has little or no choice but to migrate‚ this can include both internally displaced and migration across borders. Examples of such forced migration would include the migration of Sudan to Chad‚ and Afghanistan to Pakistan. Migrants of forced migration may include a person who is forced to flee their country in fear of losing their life which is known as a refugee; people who are forced to leave their home but stayed within the borders of their
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emissions; water pollution from raw sewage; deforestation; smoke/haze from Indonesian forest fires Definition: This entry lists the most pressing and important environmental problems. The following terms and abbreviations are used throughout the entry: Acidification - the lowering of soil and water pH due to acid precipitation and deposition usually through precipitation; this process disrupts ecosystem nutrient flows and may kill freshwater fish and plants dependent on more neutral or alkaline
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greediness rather than actually protect people from natural calamities as they claimed to have doing (Wright‚ p 70). The enormous wealth of the priests also promoted clashes with the mountain and desert folk. On the other hand‚ deforestation due to overgrazing and ploughing of fields caused the frequent floods in Mesopotamia to have a larger than normal effect. Woodlands at first used to absorb most of the rain water but due to deforestation‚ the soaking up of the water did not work (Wright‚ p 74). The
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Corinne N Bryant May 2‚ 2013 University of Phoenix The lives of the organisms in the desert require a substantial amount of survival skills. The temperature in a desert biome is always very high and it does not rain very often so it is also extremely dry. Any organisms that live in the desert must be able to adapt to these conditions in order to live. For example‚ one organism that can be found in the desert is cacti. Cacti roots are closer to the surface than other plants so it is able
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