Which of the following decades is known as the United Nations Decade of Biodiversity?

The United Nations declared the years 2011 to 2020 as the Decade on Biodiversity.

The span 1991 to 2000 predates this initiative.

The years 2001 to 2010 fall before the declared decade.

The period 2021 to 2030 is instead the Decade on Ecosystem Restoration.

The biodiversity decade thus runs from 2011 through 2020.

It was launched to support the Aichi Biodiversity Targets adopted at Nagoya in 2010.