Your presentation must have 10 slides with only pictures to share your organized presentation and each slide must last 10 second its presentation. In total you must make a final presentation of 1 minute and 40 seconds with not words or hand writings just you and your picture presentation to talk about Ecotourism and Sustainable Tourism.
To help you how to make a pechakucha, here you have an example.
https://youtu.be/sOYQsCjFojc