ozone layer
Refers to the layer of ozone in the Earth's stratosphere that absorbs most of the sun's ultraviolet radiation.
オゾン層の破壊が問題になっている。
The destruction of the ozone layer is a problem.
The ozone layer is being depleted by CFC gases.
The countries signed an agreement to protect the ozone layer.
A large hole has opened in the ozone layer over Antarctica.