carbon footprint

i found this quiz that measures your carbon footprint through an email i got from the earth day network today.

so all you do is create an avatar and answer some questions about your lifestyle. according to the website, this is how your 'carbon footprint' is calculated:
" Ecological Footprints can be calculated for individual people, groups of people (such as a nation), and activities (such as manufacturing a product).

The Ecological Footprint of a person is calculated by considering all of the biological materials consumed, and all of the biological wastes generated, by that person in a given year. These materials and wastes each demand ecologically productive areas, such as cropland to grow potatoes, or forest to sequester fossil carbon dioxide emissions."

because you can only choose the us or australia as your place of residence, i took the quiz based on my lifestyle in miami. i think my footprint is probably at one of the lowest points it will ever be since i lived in an apartment, used public transportation, didn't have a car, am vegetarian and i tried to eat organic/local foods. i only wish my stupid building had recycling.