Explanation:

• The World Bee Day is celebrated every year on May 20 to acknowledge the role of bees and other pollinators for the ecosystem.
• The theme of World Bee Day 2021 is “Bee engaged: Build Back Better for Bees”.
• The day marks the birth anniversary of Anton Jansa in 1734, who in the 18th century pioneered modern beekeeping techniques in his native Slovenia.