Chwiliwch am eich gweithgaredd arbed ynni nesaf i sgorio pwyntiau ar gyfer eich ysgol, lleihau eich defnydd o ynni a dysgu rhagor am ynni a newid yn yr hinsawdd
You have completed 1/8 of the activities in the Byddwch yn Egniol! programme Complete the final 7 activities now to score 50 points
You've recently completed an activity that is part of the Y Cwestiwn MAWR - Sut gall diffodd peiriannau helpu i leihau ein hôl troed carbon? programme. Do you want to enroll in the programme?
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