International ozone layer day quiz

The Montreal Protocol is a landmark environmental agreement that has achieved universal ratification, with 197 parties (countries) having signed it to protect the ozone layer.

The theme for World Ozone Day 2020 was 'Ozone for Life: 35 years of Ozone Layer Protection', marking the 35th anniversary of the Vienna Convention.

The Montreal Protocol on Substances that Deplete the Ozone Layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.

The ozone layer is primarily located within the stratosphere, which is the second layer of Earth's atmosphere, starting above the troposphere.

The 'hole' in the ozone layer is a severe depletion of ozone over Antarctica, which occurs seasonally due to specific atmospheric conditions and human-made chemicals.

Chlorofluorocarbons (CFCs) were historically used in a wide variety of applications, including aerosol spray cans, refrigerants in air conditioners, and fire suppression systems.

The ozone layer acts as a shield, absorbing the majority of the sun's harmful ultraviolet (UV) radiation, which is known to cause skin cancer and other health issues in humans.

Scientific assessments indicate that with the continued implementation of the Montreal Protocol, the ozone layer is expected to recover to 1980 levels between 2050 and 2065.

An ozone molecule consists of three oxygen atoms bonded together, represented by the chemical formula O3.

Both Hydrofluorocarbons (HFCs) and Hydrochlorofluorocarbons (HCFCs) are substances that contribute to ozone depletion or global warming, and are regulated under international agreements.