It is the short-wavelength light emitted from the sun which splits into UV-A, UV-B, UV-C. UV-C is the shortest one which has the germicidal effect. UV-C is good in breaking molecular bonds, altering ...
Aquarium Design - How to Use an Aquarium Air Pump (and Make It Quieter) Trump Announces Release Of JFK Assassination Files Study shows how long Social Security, $1.5M nest egg would last in 50 states ...
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