Hi there!
We are students from the wkvw school in Wetzikon, Switzerland.
We are currently working on a project about bottle bricks and have made a survey for it. We would be very grateful if you could spread the survey among your students, so we could get different answers from different countries.
https://ee.humanitarianresponse.info/single/E6ZBPWh4
Thanks in advance.
Greetings
Leonie, Luana and Alicia