2020 Weather Patterns Push Antarctic Ozone Hole to 12th-Largest on Record

The video discusses the variations in the size of the Antarctic ozone hole, highlighting the role of weather patterns and colder temperatures in ozone depletion. It explains how human-made compounds like chlorine and bromine contribute to this process. The discovery of the ozone hole in 1985 led to the Montreal Protocol in 1987, an international agreement to regulate ozone-depleting substances. Despite a decline in these substances since 2000, their long lifetimes mean they still impact the environment. The ozone layer is expected to recover to 1980 levels by 2070 due to international efforts.

What factor is primarily responsible for the activation of ozone depletion?

• Warmer temperatures

• Colder temperatures

• Increased sunlight

• Higher humidity

Which compounds are activated by polar stratospheric clouds to destroy the ozone layer?

• Sulfur and phosphorus

• Nitrogen and oxygen

• Carbon dioxide and methane

• Chlorine and bromine

When was the Antarctic ozone hole first discovered?

• 1995

• 2005

• 1985

• 1975

What international agreement was signed to address ozone depletion?

• Montreal Protocol

• Paris Agreement

• Geneva Convention

• Kyoto Protocol

By what year is the Antarctic ozone expected to recover to 1980 levels?

• 2080

• 2070

• 2060

• 2050