Causes Of The Enhanced Greenhouse Effect Flashcards

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1
Q

what are the 3 main causes of the enhanced green house effect caused by humans?

A

land use change
deforestation
urbanisation

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2
Q

what percentage of annual carbon release does land use account for? what does it impact?

A

10%

it impacts short term stores in the carbon cycle such as soil and atmosphere

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3
Q

what are examples of land use change?

A

farming practices

fertilisers

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4
Q

how much of deforestation is for cattle ranching?

A

70%

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5
Q

how much methane do cattle emit minimum per year?

A

230 million pounds of cattle

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6
Q

how have fertilisers and rice padi fields increased methane production? what is the substitute solution?

A

they are both sources of green house gases

methane has increase as a result of increased productivity

due to higher co2 levels

solution: growing grains like quinoa as they require less water to grow

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7
Q

how much methane does rice paddies produce per year?

A

50-100 million tons

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8
Q

how much of all global greenhouse gas emissions does deforestation account for?

A

20%

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9
Q

what’s the main impact if the carbon cycle is interrupted by deforestation?

A

reduces carbon sequestration

land becomes a carbon source rather than a carbon sink

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10
Q

how much of the worlds land mass does urban areas occupy? but how much of all human co2 emissions occur here?

A

2%

97% of all human co2 emissions occur in this 2%

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11
Q

what building material releases co2 in production? and how much does it contribute to global carbon dioxide emissions each year?

A

cement

7% of global carbon dioxide emissions each year

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12
Q

what have humans started to help mitigate global warming and to restore environments?

A

the emergence of rewilding where human managed areas are being reduced and replaced by wildlife to restore environments

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