Ozone depletion is primarily caused by human activities, particularly the release of ozone-depleting substances such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) into the atmosphere.

The Earth's gravity plays a role in ozone depletion by pulling ozone molecules down from the stratosphere to the troposphere. In the troposphere, ozone molecules are more likely to be destroyed by sunlight, leading to ozone depletion.

The ozone layer is primarily located in the stratosphere, which extends from approximately 10 to 50 kilometers above the Earth's surface.

The primary function of the ozone layer is to absorb harmful ultraviolet (UV) radiation from the sun, protecting life on Earth from its damaging effects.

Ozone depletion does not lead to enhanced photosynthesis and plant growth. Instead, it can have negative impacts on plant life due to increased UV radiation.

The Montreal Protocol is an international agreement designed to protect the ozone layer by phasing out the production and use of ozone-depleting substances.

The recovery of the ozone layer is a gradual process, and it is estimated that it will take approximately 50 to 100 years for the ozone layer to fully recover after the implementation of the Montreal Protocol.

Carbon dioxide (CO2) is a greenhouse gas, but it is not an ozone-depleting substance. Ozone-depleting substances are typically halogenated compounds, such as CFCs, HCFCs, and halons.

The term 'ozone hole' refers to the significant thinning of the ozone layer over specific regions, particularly over the Antarctic. It is characterized by a substantial reduction in ozone concentration, leading to increased levels of UV radiation reaching the Earth's surface.

The polar vortex is a large-scale atmospheric circulation pattern that forms over the Antarctic during the winter months. It isolates the Antarctic atmosphere from the rest of the globe, creating favorable conditions for the formation of the ozone hole.

Ozone-depleting substances, such as CFCs and HCFCs, release chlorine and bromine atoms through photolysis, a process in which UV radiation breaks down these compounds. These atoms then react with ozone molecules, leading to their destruction.

Natural ozone production in the stratosphere primarily occurs through the photolysis of oxygen molecules by UV radiation. This process splits oxygen molecules into individual oxygen atoms, which then combine with other oxygen molecules to form ozone.

Increased UV radiation reaching the Earth's surface due to ozone depletion can have various negative consequences, including increased risk of skin cancer and cataracts, damage to crops and forests, and weakening of the immune system. Enhanced photosynthesis and plant growth is not a potential consequence of increased UV radiation.

The ozone layer in the stratosphere absorbs approximately 95-99% of the UV radiation from the sun, preventing it from reaching the Earth's surface.

The United Nations Environment Programme (UNEP) is the international organization responsible for coordinating efforts to protect the ozone layer. It plays a crucial role in implementing the Montreal Protocol and promoting global cooperation on ozone depletion issues.