Q. How often do you recycle your rubbish so it can be reborn into spangly, useful new things?
Endpoints:
Never = 0 kg
Always - (2.6 x 7 days x 4 weeks) = 72.8 kg CO2
Midpoints:
A bit - (72.8) x (1/3) = 24.27 kg CO2
A lot - (72.8) x (2/3) = 48.53 kg CO2