‘cost’ is more likely to be the main reason for undertaking environmentally friendly behaviours than it was in July 2021 to January 2022
‘cost’ yn fwy tebygol o fod y prif reswm dros ymgymryd ag ymddygiad sy’n gyfeillgar i’r amgylchedd nag yr oedd rhwng Gorffennaf 2021 ac Ionawr 2022