Please choose the correct answer to the question: When stratospheric ozone levels are reduced, the amount of ultraviolet radiation hitting Earth increases. Ozone depletion is most often caused

Answer1: by the reversal of the magnetic field of Earth. Answer2: when fluorocarbons are released into the atmosphere. Answer3: when electromagnetic waves from the Sun increase. Answer4: by abrupt changes in weather and climate patterns.

Answer format: answer1/answer2/answer3/answer4
Answer: answer2