Q. Which of the following organisations has started the International Day for Conservation of Mangrove Ecosystem?
Explanation:
The International Day for Conservation of Mangrove Ecosystem was started in 2015 by UNESCO. It is celebrated on July 26th every year. The day is celebrated in order to raise awareness of the importance of mangroves in a unique, special and vulnerable ecosystem. It also aims to promote solutions for their conservation, sustainable management and uses.