The percentage of people saying they had done at least one environmentally friendly behaviour was higher in 2022-23 than in July 2021 to January 2022, when 82% of people had done so.
Roedd canran y bobl a ddywedodd eu bod wedi gwneud o leiaf un ymddygiad ecogyfeillgar yn uwch yn 2022-23 nag ym mis Gorffennaf 2021 i fis Ionawr 2022, pan oedd 82% o bobl wedi gwneud hynny.