Question

what is ozone hole? what are it's effects?

Answer 1

 Ozone Depletion. Asozone depletes in the stratosphere, it forms a 'hole' in the layer. Thishole enables harmful ultraviolet rays to enter the Earth's atmosphere. Ultraviolet rays of the Sun are associated with a number of health-related, and environmental issues.
Ozone hole is the area of ​​the Earth’s atmosphere where abnormal reductions of ozone occur, it is an annual phenomenon observed during the spring in the Polar Regions and is usually followed by a recovery during the summer.

Answer 2

There is depletion in the ozone layer due to the release of the Chlorofluorocarbons which make the ozone to depletion depleted ozone cannot be recovered we must just decrease the use of the objects which release CFC like refrigerators and Air conditioners
Effects are so much on human as well as animals it directly affects to the skin of that humans causing in cancer and also makes behavorial discomforts among the animals