Assortment of food types

A few simple mental habits such as knowing how to quickly pick the foods with the least carbon impact, can help you make big strides in your personal sustainability. In this Earth911 Quiz, you’ll be presented a set of foods and asked to order them by their CO2 emissions, from most CO2 to least. We’re using the BBC’s annual estimates for CO2 emissions.

You get three chances to put the foods in each question in the correct order. Use this quiz to hone your sustainable food selections skills. We won’t report how many times it took you!


Making smart sustainable choices requires practice. Earth911’s weekly sustainability quiz helps you hone your ability to recognize earth-friendly products, services, and practices. Through your daily choices — from transportation mode to purchases to waste disposal — you can make a positive difference.

This quiz was originally published on September 24, 2020.

By Earth911

We’re serious about helping our readers, consumers and businesses alike, reduce their waste footprint every day, providing quality information and discovering new ways of being even more sustainable.