EPA 608 Certification Core Practice Test All Answe
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EPA 608 Certification Core Practice Test All Answers Correct 1. As of what date did it become illegal to release Class I and Class II refrigerants into the atmosphere? - ️ July 1, 1992. 2. What role does the ozone layer play in protecting the Earth? - ️ The ozone layer acts as a shield against the Sun's harmful ultraviolet (UV) rays, located in the stratosphere about 6 to 30 miles above the Earth. 3. Which atom in CFC and HCFC refrigerants is responsible for ozone depletion in the s...