Answers (2)
We all die an agonizing death from cancers resulting from massive doses of radiation poisoning. Anyone who does manage to survive by living underground dies later as the radiation kills off the plants and consequently the animals. Skin cancers are the number one cause of death in Ausralia directly because of this problem. Fortunately this is one problem we caught in time and it is slowly healing itself at both the north and south poles and it should be restored within the next 50 years or so.
All light is radiation, the ozone layer protects us from UV radiation (ultra violet light) and that is what causes the skin cancer. The earths magnetic field cannot fail as it is generated by the rotating iron mass of the molten mantles. I suppose in the far far distant future if the earth survives the expansion of the sun as it becomes a red giant then it may cool sufficiently for the core to stop rotating and thus end the magnetic field.
there is a big hole of ozone layer on antarctica. did they die
Regarding the comment about Antarctica, the ozone hole is not a true "hole" in the ozone layer. The depletion of ozone in some places has reached up to a 65% loss, but not a complete loss of ozone. Antarctica does not have a large population of people, and those who are there working in the research centers do not spend a lot of time outdoors "in the sun"; typically they have to wear a lot of layers of protective clothing due to the cold weather. The extreme cold poses a greater threat of death than intense UV light. In Australia, however, which is near to the Antarctic and where people do spend time outdoors, skin cancer does lead to death and is a much more prevalent cause of death than in regions located farther from Antarctica. Terrestrial life was not possible before the ozone layer formed, and while the ozone layer is essential to terrestrial life, its depletion has already had an effect on ocean life, reducing photosynthesis in surface plants like plankton which are a food source to mammals such as whales and smaller organisms like krill which are also a food source to whales and other ocean life. The intensity of UV radiation from the sun, without a protective blanket of ozone in the stratosphere, does not allow life to flourish on the earth, not even in the water.
I guess all on the Earth's surface will die much faster then you've suggested. All will be burned. It is said the earth magnetism protects us from the space radiation, not the ozon layer