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bu gostyngiad o draean yn nifer yr achosion o wenwyno hefyd , drwy ddefnyddio pecynnau na all plant eu hagor , unedau storio diogel a rhaglenni addysgu
poisoning has also been reduced by one third through the use of child-resistant packaging , safe storage units and educational programmes
helen mary jones : mae'r llywydd yn gywir , david , wrth ddweud bod eich safbwynt yn aml yn ddiddorol , ond a wnewch ddweud wrthym pwy yw'r ymyrwyr daionus hyn sy'n ymlusgo o'u cuddfannau i wenwyno ein system addysg ac o ble y deuant ?
helen mary jones : the presiding officer is correct , david , in that you often have an interesting point of view , but will you tell us who these do-gooders are who crawl out of the woodwork to poison our education system and where they are from ?