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I think that the increasing cost of extraction of fuel and coal is the main reason for the adaption of fracking.  i strongly against the use of fracking method to extract gas. This is because the chemical contain in the fluid is very toxic which will harm the environment.

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I have a weird question. What if human didn't extract fuel, gas and coals from the underground, how is the carbon cycle balance the amount of carbon remain in the atmosphere? From the video, we know that from time to time part of the carbon will transformed to fuel or coal. Meaning to say that the amount of carbon will reduce as time passed.

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Before human extract fossil fuel from the underground, the carbon cycle has found their way to balance the amount of carbon contain in the atmosphere. But when human start to cut down trees and extract fossil fuel, this had increased the amount of carbon in the atmosphere during the burning of fuel and reduced the amount of carbon been absorb back to soil.  As a result, there are excessive carbon remain in the atmosphere.

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orginally

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In my opinion, the most serious effect brought by fracking process is causing air pollution. When Fracking process is carried out, 3% recovered gas is escaped to the atmosphere and the gas recovered is methane gas which is more potent than carbon dioxide that will cause air pollution and also can cause green house effect which can cause elevation in temperature.

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Increased demand for electricity in 1995

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What do you guys think?

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In my opinion the carbon cycle is working fine as there are enough plants or trees to absorb the carbon released by animals and other activities until human start developing modern city.

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Reduced infant mortality is a consequence of opening new hospital

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Greater demand for secondary education led to a result of higher rates of literacy

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While on the other side the carbon also get to released in to the sea and the same prey and predator process happens in the seas and while a plants or animals die, the carbon get to release into the underground.The carbon stored in the underground was remain stored for more than hundred years and it turns into fuel ,gas and coals.

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After watching the video i learnt that the carbon are first stored in plants. Then the plants got eaten by the animals like rabbits. When the animals poop or plants die, some of the carbon get to stored in the soil while some of it was released to the air.

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Opening a new hospital in 2006 resulting in reduced infant mortality

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Cold winter of 1995 has led to increased demand for electricity

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Higher rates of literacy is the effect of greater demand for secondary education

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Constructing an airport is a consequence of tourists arriving

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Installing speed cameras on main roads led to a fall in the number of fatal accidents.

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More tourists arriving is the effect of constructing an airport.

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Constructing an airport caused more tourists arriving.

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Installing a speed cameras in main road, consequence of a fall in the number of fatal accidents.

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A fall in the number of fatal accidents is the result of installing a speed cameras on main road ,

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Please correct me if there any mistakes in my answer.