co2, carbon dioxide

Carbon is everything to life on Earth, but too much in the wrong places, such as the atmosphere, can cause havoc. This week’s quiz puts your knowledge of the second most common element on the planet, carbon, to the test. Dive in, carbon-based lifeforms!

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

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.