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OCR A Level Geography Earth's Life Support System Summary - 3a (Human factors can disturb and enhance the natural processes and stores in the water and carbon cycles)R70,66
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OCR A Level Geography Earth's Life Support System Summary - 3a (Human factors can disturb and enhance the natural processes and stores in the water and carbon cycles)
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Course
Earth\'s Life Support Systems
Institution
OCR
Book
OCR A Level Geography Second Edition
Clear concise summary of Chapter 4 (ELSS) of Michael Raw's OCR A Level Geography textbook which is linked to these documents
Chapter 4, 3a (human factors can disturb and enhance the natural processes and stores in the water a
September 13, 2022
1
2021/2022
Summary
Subjects
geography
a level geography
a level
year 12
year 13
sixth form
ocr
ocr geography
elss
fossil fuels
carbon sequestration
ccs
earths life support system
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1.2. How much change occurs over time in the water and carbon cyc
3a. Human factors can disturb and enhance the natural processes and stores in the
Sequestration = The process of storing CO2 in underground Sequestration of waste carbon:
geologic formations. The CO2 is usually pressurized until it
becomes a liquid & then it is injected into porous rock Description
formations in geologic basins The combustion of fossil fuels & the transfer
stores to the atmosphere & oceans is the main
Use of fossil fuels: warming
One possible solution to this problem is to captu
Description power plants & industry
Fossil fuels are used to produce energy in the home - This new technology of carbon sequestration is
burned to produce heat, in large power stations they are storage (CCS)
used to produce electricity & they are also used to power Technology has been piloted at just a handful of
engines It involves 3 states = CO2 is separated from pow
When fossil fuels are burned in power stations & by is then compressed, pressurised & transported b
vehicles/planes = gases (as unwanted by-products known it’s injected into porous rocks deep underground
as carbon emissions) enter the atmosphere is stored permanently
- CO2 is given off when fossil fuels e.g. oil & coal are
burned Impact on the carbon cycle
CCS could eventually play an important part
Impact on the carbon cycle greenhouse gas emissions
Transfer significant quantities of carbon into the E.g. in the USA - 40% of all CO2 emissions are f
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