The ozone depletion is created by CFCs pollutants from human activities.And this causes more UV-B radiation which is harmful to marine species.

• 人类活动产生的氟氯烃等化合物对大气的污染造成臭氧损耗，引起地面紫外辐射（UV-B）增加，进而造成对生物的有害影响。