Questionĭescribe two reasons why the amount of carbon dioxide in the atmosphere decreased over time. Natural gas contains the smallest molecules and is often found on top of crude oil, trapped under sedimentary rock. Over millions of years, heat and pressure turned the remains of the organisms into crude oil and natural gas. The lack of oxygen prevented oxidation from occurring. These small organisms died and their remains sank to the bottom where they were buried under sediments. Compression and heating over millions of years turned the wood into coal.Ĭrude oil and natural gas were formed from simple plants and tiny animals which were living in oceans and lakes. Flooding caused the wood from these forests to be buried in a way that prevented oxidation taking place. Many of these organisms, and the simple organisms in the food chains that they supported were turned into fossil fuels, eg crude oil, coal and natural gas, which all contain carbon.Ĭoal is a fossil fuel which was formed from trees which were in dense forests in low-lying wetland areas. The Energy Act 2010 made law plans to raise a levy on power users to. Uptake by living organismsĬarbon dioxide was also absorbed from the oceans into photosynthetic algae and plants. The UKs carbon capture and storage (CCS) sector could sustain 100,000 jobs by 2030 and generate up to 6.5bn pounds a year. Carbonate compounds were then precipitated as sedimentary rocks, eg limestone. As the oceans formed, carbon dioxide dissolved to form soluble carbonate compounds so its amount in the atmosphere decreased. QuestionĮxplain why diamond does not conduct electricity and why graphite does conduct electricity.How carbon dioxide decreased Formation of sedimentary rocksĬarbon dioxide is a very soluble gas. This makes graphite slippery, so it is useful as a lubricant. Carbon capture traps emissions that contribute to climate change. Scientists unveil least costly carbon capture system to date by Brendan Bane, Pacific Northwest National Laboratory Taking up only as much space as a walk-in closet, a new carbon capture and conversion system is simple and efficient at removing carbon dioxide from gas that's rich with carbon dioxide. This means that the layers can slide over each other. PM due to announce Scotland carbon capture funding. The forces between the layers in graphite are weak. This makes graphite useful for electrodes in batteries and for These electrons are free to move between the layers in graphite, so graphite can conduct electricity. Graphite has delocalised electrons, just like metals.
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