Respuesta :
Answer:
The ozone layer shields Earth from the sun's ultraviolet rays, which increase the risk of cancer and threaten crops and aquatic life.
Explanation:
Human-produced chemicals called chlorofluorocarbons (CFCs) made headlines in the 1980s when it became clear they were eating a hole in the ozone layer above Earth's polar regions.
It is important because it acts a sheild to protect the Earth’s surface from the sun’s harmful radiation. It’s biggest threat is nitrous oxide
