Reducing ecological footprint | Criminal homework help

 What steps can we take to reduce our ecological footprint? 

Minimum of words.

My text book for this class is:

 Essentials of Environmental Science, 2nd edition (2015), Friedland, Andrew, Relyea, Rick,
published by W. H. Freeman (2015)
ISBN-13: 978-1319065669
ISBN-10: 131906566X