What is a carbon footprint?
A measure of the amount of CO2 emitted through the combustion of fossil fuels.
What is biofuel?
Biofuel is solid, liquid, or gas fuel consisting of, or derived from, biomass (recently living organisms or their byproducts - such as cow dung).
What is an ecological footprint?
A calculation of the amount of CO2 emissions that are produced as a result of energy use and an estimate of the amount of bioproductive land needed to absorb it.
What is bioproductive land?
Land that is capable of absorbing CO2 emissions. It excludes sea, built up land area or deserts.
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