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As the human population increases, the volume of waste and pollution that is produced also increases. Polluting an ecosystem harms or kills the organisms that live within it.

Modern society is more consumable, which means humans manufacture more products and replace them more often. This consumption is not sustainable . Many natural materials, including fossil fuels, will soon run out and scientists argue that there is already too much waste.

Water pollution

In some parts of the world, open sewers can lead into water courses, such as streams and rivers, which can cause serious illness in humans that may drink the contaminated water.

Some farmers use too many fertilisers, which can run off fields during heavy rain. This can pollute nearby streams and rivers leading to eutrophication . Some water pollution even comes from toxic chemicals released illegally by factories.

Air pollution

Combustion of fossil fuels and other fuels releases carbon dioxide. This contributes to the greenhouse effect and leads to global warming . It also releases sulfur dioxide and nitrogen oxides which can cause acid rain. Air pollution can also be caused by tiny particulates from smoke which can cause smog . Some of the world's major cities like Delhi in India and Karachi in Pakistan have dangerously high levels of air pollution.

Land pollution

The rubbish we throw out that is not recycled goes into a land fill. These are huge holes in the ground into which our rubbish is dumped. Some things like batteries cannot be put into landfill sites because of the toxic chemicals they contain. They must be recycled. Other land pollution comes when some people dump rubbish in public or other private places, often to avoid paying for it to be disposed of. This is caused fly tipping and is illegal.

Land use

The larger the human population gets, the more land we require. More houses must be built, more resources found, more food must be grown and more waste is produced. This often means less space and fewer resources for other animals and plants.

Often biodiversity is significantly reduced when land is cleared for human uses, such as building, quarrying, farming and waste disposal. Think about the reduction in biodiversity, which occurs when an area of rainforest is cut down to grow crops.

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More Guides

Biodiversity & the effect of human interaction on ecosystems - Edexcel

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BBC Bitesize - GCSE Biology (Single Science) - Biodiversity & the effect of human interaction on ecosystems - Edexcel - Revision 3

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1 2 3 4 5 6 Page 3of 6 As the human population increases, the volume of waste and pollution that is produced also increases. Polluting an ecosystem harms or kills the organisms that live within it. Modern society is more consumable, which means humans manufacture more products and replace them more often.

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Case Study: Coca Cola, India Where? In India there are 27 company owned bottling operations and another 17 franchise-owned ones In…

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The Ohio River is the most polluted river in the U.S

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Deforestation and the hydrological cycle

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Deforestation and the hydrological cycle

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Center for International Forestry Research (CIFOR)

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Understanding the role of forests and deforestation on local, regional and global precipitations

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gradual erosion of soil,

threat of toxicity to humans and other animals,

Increased pest resistance and the unintended killing of pests' natural enemies.

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Industrial Pollution may interfere with natural processes
. For example, industrial waste could change local climatic conditions or destroy wildlife habitats.

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Intensive farming is an agricultural intensification and mechanization system that aims to maximize yields from available land through various means, such as heavy use of pesticides and chemical fertilizers.

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Deforestation and the hydrological cycle

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Deforestation and the hydrological cycle

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a powerpoint on the important topic...

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This has boosted the local economy due to tourists coming to make use of recreational facilities around the reservoir and to experience the wildlife. However, around 6km of land was flooded to create this reservoir so many farmers lost their farmland. On the other hand this decision may have been made as it could be more cost effective.

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Intensive farming or intensive agriculture also known as industrial agriculture is characterized by a low fallow ratio and higher use of inputs such as capital and labour per unit land area.

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This is a link about conflicting  views on a reservoir/dam being built.

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This is a link about conflicting  views on a reservoir/dam being built.

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http://tribune.com.pk/story/1101296/disputed-diamer-residents-threaten-to-halt-dam-construction/

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GILGIT: Residents of Diamer have threatened to stop construction work on Diamer-Bhasha Dam if the long-standing conflict between Gilgit-Baltistan's Diamer and Khyber-Pakhtunkhwa's Harban areas over a strip of land is not settled.

"We will not allow work on the dam unless the boundary issue is settled," Lambardar Bashir said during a press conference in Gilgit on Tuesday. "The demarcation should be done under the supervision of the army."

The elders of Thore Valley accused Kohistan MPA Abdul Sattar of taking money from the Indian intelligence agency, RAW, for sabotaging the dam and China-Pakistan Economic Corridor.

The notables with Bashir said the strip of land belonged to the forefathers of people who are settled in Thore since long.

They added commute on the Karakoram Highway has become a nightmare due to the dispute. Therefore, they demanded police take action against those disrupting law and order.

"If the situation is not settlde amicably, there are chances it will be settled after bloodshed."

The elders also refused to accept the report of a commission which was formed to settle the dispute.

The nearly 10-kilometre stretch of land on both sides of the Basari check post, which separates Kohistan from G-B, has long been a bone of contention between people of Thore Valley in Diamer and Harban Nala in Kohistan. The disputed land is among the areas being demarcated for acquisition for the much-awaited dam.

Published in The Express Tribune, May 11th, 2016.

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Diamer residents threaten to halt dam construction | The Express Tribune

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Say long-standing boundary issues should be resolved

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definition- taking too much water from the ground (taking too much before it can be replenished)

coca cola case study- they dug wells into precious groundwater store, soon after putting in six wells, water shortages began to be reported, by 2004 news from the region were described as a desperate situation, all the wells had been dried up, coca cola had sped up the rate of water shortage because they were already in drought.

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This is a video from a Mumbai, India based based NGO: Vikas Adhyayan Kendra on water resources in India. Visit http://www.vakindia.org

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Information onIntensive Agriculture Link 

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Information onIntensive Agriculture Link 

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http://www.britannica.com/topic/intensive-agriculture

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A reservoir is a dam clever (aye? aye?) storage that holds fluids, gas or hydrocarbons much like a dam. They can be created by controlling streams and moving the water in to the reservoir along with damns which also can store water.

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In countries such as china, intensified farming and increased use of fertilizers have caused the soil to loose moisture. Researchers have found a clear link between the use of fertilizer, and the rate of evaporation; where more biomass results in an increase in evaporation. This causes the soil to loose its moisture and dehydrate; this then results in less water to drain in to surrounding rivers and lakes.

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Reservoirs affect the hydrological cycle as they prevent the natural progression of water infiltrating into the ground, meaning that the level of the water table could be affected if the reservoir is too big.

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What is Sewage Disposal?
Sewage disposal is the process in which sewage is transported through cities and inhabited areas to sewage treatment plants, where it is then treated to remove contaminants to produce environmentally-safe waste.