The carbon footprint shows how much carbon dioxide a person emits(排放)in everyday life. It measures the amount offossil(化石)fuels and electricity someone uses up as well as the carbon footprint of the products they buy. When we use our cars or heat our homes with carbon dioxide，various other gases are set free. 【小题1】

You can measure your carbon footprint by using a calculator that you can find on various websites. 【小题2】 In America for example，every citizen produces about 28 tons of carbon dioxide and other dangerous gases a year；in Great Britain the amount is about 10 tons.

【小题3】 The way we travel，for example，has a major effect on our environment. Use your bike or walk for short distances. Public transport is a way of getting to places without putting a burden on the environment. 【小题4】 Many environmental experts，however，argue that it often saves energy to buy food that is produced naturally in faraway places than consuming food grown locally in greenhouses. In your home you can contribute to saving energy by turning off lights if you don’t need them or by avoiding the use of air conditioners. Recycling plastic glass and paper can also reduce your carbon footprint dramatically.

【小题5】 Only if we concentrate on reducing carbon emissions together can we hope to make our environment better.