| Group 49 | Group Name : 7Square |
| Group Members : 1) Poh Junhan 2) Winnie Jesslyn 3) See Siew Leng Reine 4) Phua Jia Jing 5) Goh Zhao Jie 6) Alvis Vu Tuan |
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| 1.
If hydrogen accumulates, it will result in approximately 10% decrease in atmospheric ozone. This is due to the fact that UV radiation can cause hydrogen molecules to form free radicals in the stratosphere. These free radicals will act as catalyst for ozone depletion. |
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| 2.
Fossil Fuels were formed as a result of organic matters being put under extreme pressure. These organic matters were the results of photosynthetic process. Solar energy was converted to potential energy in these organic matters which eventually becomes the potential energy in fossil fuels. |
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| 3.
The process does not have a very high efficiency as large amounts of energy is required to separate O2 and H2 out of H20. The overall net energy produced is not sufficient. |
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