Is it possible that Green Purchasing Practices could have a positive impact over the firm's performance, in the food and drink industry?

Hi everybody, I am a final year Master student at IESEG School of Management, currently examining green purchasing practices and firm performance for my thesis, focused on Scottish Food and Drink SMEs (retailers and manufacturers). I would greatly appreciate if you could complete this short questionnaire. It contains only 15 questions to be completed. Your participation in this research project is completely voluntary and your responses will remain confidential and anonymous. I highly appreciate your support! Thank you! Link: http://ieseg.az1.qualtrics.com/SE/?SID=SV_5ubb5Uto5YSQu21