This ozone layer depletion depicts a region in the Earth's stratosphere that contains high ozone concentrations and protects the planet from the sun's harmful ultraviolet radiations. The ozone layer is mostly found in the Earth's lower atmosphere. It can absorb approximately 97-99% of the harmful ultraviolet radiations emitted by the sun, which can harm life on Earth. Billions of people would develop skin diseases and have weakened immune systems if the ozone layer disappeared. Scientists, however, have discovered a hole in the ozone layer over Antarctica. This has focused their attention on various environmental issues and solutions. The main causes of the ozone hole are chlorofluorocarbons, carbon tetrachloride, methyl bromide, and other chemicals.