To limit the effects of climate change’ was the given reason for 18% of people eating less meat and 10% of those eating less dairy.
Cyfyngu ar effeithiau newid hinsawdd’ oedd y rheswm a roddwyd gan 18% o bobl yn bwyta llai o gig a 10% o'r rhai'n bwyta llai o gynnyrch llaeth.