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EPA 608 Certification Core Practice Test Exam with 100% correct Answers 2023
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EPA 608 Certification Core Practice Test Exam with 100% correct Answers 2023 As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? ANS-July 1, 1992. What is the ozone layer and why is it important to us on Earth? ANS-Protective shield for Earth f...
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