What effects would occur if the ozone in the atmosphere was destroyed?

Answer 1

First of all the ozone layer is there to protect us from the suns most harmful UV rays

The ultra violet rays from the sun are absorbed by the ozone layer because of the gas present in it(O3)

If the ozone layer is depleted by harmful gases like Chlorofluorocarbon (CFC), freon, etc., the uv rays enters the troposphere and affects living beings and causes diseases like skin cancer.

The ozone protects us from deadly types of UV that we would normally be protected against. This kind damages your skin and deeper tissue's DNA causing various types of cancer. Basically, we'd all die of cancer.

Well not die of cancer, but we'd burn to death. The Earth and all of its inhabitants would burn because the Sun's powerful UV rays would come at us and we'd have no protection. Cancer happens now while we still have 80 - 95% protection from the sun's UV rays because of the ozone layer. Without the ozone layer, the rays would literally fry us.

With no ozone, ultraviolet rays (UV-B specifically) are easily able to penetrate the earth's atmosphere and exposure to UV-B rays has been linked to the increased occurrence of cancer, cataracts, mutation, and decreases in crop yields and loss of arable land. This affects Man and all DNA-based life on the surface of the Earth.

The conditions that would be needed to have this situation occur though are a complete lack of oxygen in our atmosphere and/or the lack of sunlight. Should either of these conditions happen, life on the planet would be extinct. The primary answer is that we would be dead before the ozone was gone.

Answer 2

all plant and life would burn up because of the sun heat rays

Answer 3

If there was no ozone layer there would be nothing to filter out the bad rays from the sun from reaching our skin. Diseases like skin cancer due to the sun would be much more common.