The figure for 2006 for Australia is 18.2 metric tons of CO2 per person per year.
Sydney's population is 4,504,469, which means that Sydney produces 81 981 335.8 tonnes of CO2 per year. (That's nearly 82 million tonnes!)
(A metric ton, or a tonne, equals 1000 kilograms.)
There are perhaps millions of people, cars and power plants in a city that produce carbon dioxide as a waste product. In a garden, plants take up and use CO2 and a few insects, bugs and snails make CO2. That means that the city is much worse.
Trees remove carbon dioxide from the atmosphere, store the carbon and release oxygen. A sustainable city will be generating electricity from renewable sources. Its building will be designed so they maximise natural cooling and heating. A sustainable city will be seeking to lower the amount of carbon dioxide in the atmosphere and trees will do that.
sydneyI'm not sure any city is at this location but Sydney, Australia is near this location.
The level of carbon dioxide in air from remote locations is 0.0385% by number of molecules 0.0578% by mass City air or indoor air typically has significantly higher carbon dioxide levels. This has increased from about 0.031% by molecule (0.046% by mass) in the last century, and a pattern for the previous 400,000 years between 0.020% (0.030%) in the ice ages and 0.028% (0.042%) in the warmer interglacial periods.
Sydney :)
There are perhaps millions of people, cars and power plants in a city that produce carbon dioxide as a waste product. In a garden, plants take up and use CO2 and a few insects, bugs and snails make CO2. That means that the city is much worse.
Trees remove carbon dioxide from the atmosphere, store the carbon and release oxygen. A sustainable city will be generating electricity from renewable sources. Its building will be designed so they maximise natural cooling and heating. A sustainable city will be seeking to lower the amount of carbon dioxide in the atmosphere and trees will do that.
The closest capital city to Sydney is Canberra.
Sydney is already a city.
City of Sydney was created in 1842.
If your question is "In which city is the Sydney Opera House?" I guess the answer is Sydney, Australia...
Solar plants have practically no carbon dioxide emissions, except when they are being built.
No. Sydney is a city in Australia. Copenhagen is the capital city of Denmark.
Sydney.
City of Sydney Library was created in 1909.
The area of City of Sydney is 25 square kilometers.
A-P Hurd has written: 'The carbon efficient city' -- subject(s): Carbon dioxide mitigation, Environmental aspects, Sustainable urban development, Urban ecology (Sociology), City planning