The exercise is to decide whether the question accepts the proposed suggestion as a correct answer. If yes, write "True", otherwise write "False".
Question: what causes destruction of the ozone layer
Suggestion: Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth 's stratosphere (the ozone layer ), and a much larger springtime decrease in stratospheric ozone over Earth's polar regions.
