Answer:
The ozone hole will not be healed for several decades because CFCs and other manufactured chemicals are currently present and will continue being so in the atmosphere for the next 50-60 years.
Exaplanation:
The ozone hole is slowly healing, but it will take another 50 years or so for it to finally complete its recovery process. The reason being is that CFCs and other manufactured chemicals that caused the destruction of the ozone hole are able to remain present in the atmosphere for approximately 50 to 100 years.
