How many round-trip flights did you take in the past 12 months?
0 to 2
3 to 5
6 to 10
How do you move around in the city, most of the time?
Walking or cycling
Bus or MTR
What is the size of your dwelling (in square feet)?
How often do you take up green practices (e.g. refuse plastic bags, recycling, save water and energy) in a week?
A few times