Discussion on Environmental Chemistry


 

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Posted on: 05:09:08 PM on March 24, 2017
Posted By:
carter
UV rays are three types UV a, UV b,UV c which one is cancer causing harmful to us and why it is


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Posted on: 06:20:12 PM on March 25, 2017
UV b...........It plays a key role in the development of skin cancer and a contributory role in tanning and photoaging.



Posted on: 08:45:44 PM on October 30, 2017





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