Final answer:
The ozone layer in the upper atmosphere, or stratospheric ozone, protects life on Earth from harmful UV radiation. It has been recovering due to international efforts to phase out CFCs.
Step-by-step explanation:
The statement that the beneficial O-Zone exists in a region of the atmosphere is true. Specifically, this beneficial ozone is known as stratospheric ozone, which forms naturally in the upper atmosphere and has the crucial role of blocking harmful ultraviolet radiation from the sun. The ozone layer, located primarily in the stratosphere between 15 and 35 kilometers above Earth's surface, consists of O3 molecules that absorb ultraviolet light, thereby protecting all forms of life on Earth. However, these ozone levels were threatened by human activities through the use of chlorofluorocarbons (CFCs). Due to global efforts and regulations, the depletion of the ozone layer has been halted, and the ozone layer, including the previously expanding ozone hole, is showing signs of recovery.