Mae’r Gweinidog Tai ac Adfywio Rebecca Evans wedi ysgrifennu at yr Ysgrifennydd Gwladol dros Waith a Phensiynau i rybuddio am effaith Credyd Cynhwysol ar rai o’r bobl fwyaf agored i niwed yng Nghymru.
Rebecca Evans has written to the Secretary of State for Work and Pensions to warn about the impact Universal Credit is having on some of the most vulnerable people in Wales.