Oeddech chi'n gwybod y gallech chi arbed £910 bob blwyddyn pe baech chi'n gostwng y tymheredd yn yr ysgol 1°C? Dywedwch wrth eich pennaeth beth hoffech chi ei wneud gyda'r holl arian yna!
You have completed 4/10 of the activities in the Y Cwestiwn MAWR - Sut gall diffodd peiriannau helpu i leihau ein hôl troed carbon? programme Complete the final 6 activities now to score 100 points and 30 bonus points for completing the programme
Well done, you have scored 80 points so far and you're in 12fed position on the scoreboard. Complete your next activity to climb higher up the scoreboard!
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