Correct Answer : May 22nd
Biodiversity is a broad phrase that refers to the diversity and variability of life on Earth. It is self-evident that the ecological world's equilibrium is required for survival. Every year on May 22, the International Day for Biological Diversity commemorates the value of biodiversity.
The purpose of the day is to raise awareness about the environment and all species that live on this planet. It also encourages people to recognise and address similar concerns and issues.
Theme : “Building a shared future for all life” is the theme of International Day for Biological Diversity for 2022. The theme was chosen to continue developing momentum and support the post-2020 global biodiversity framework at the forthcoming UN Biodiversity Conference (COP15).
History : The United Nations General Assembly designated May 22 as International Day for Biological Diversity in December 2000. When the United Nations conducted its "Earth Conference" in Rio de Janeiro, Brazil, in 1992, special emphasis was placed on environmental conservation and protection. Following that, Biodiversity Day was observed on December 29 until 2000, when the date was changed to May 22..
Source : NDTV