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er enghraifft , ers 1995 , bu gostyngiad yng nghrynoadau blynyddol cyfartalog gronynnau a nitrogen deuocsid mewn mannau yng nghymru
for example , since 1995 , there has been a decrease in annual average concentrations of particulates and nitrogen dioxide at sites in wales
disgwylia'r llywodraeth , drwy ei phapur gwyn , i ddefnyddwyr gyfrannu'n sylweddol at leihau carbon deuocsid
the government , through its white paper , expects consumers to contribute significantly to carbon dioxide reduction
dros y 25 mlynedd diwethaf , gwnaethpwyd ymdrechion enfawr i lunio modelau gwyddonol o hinsawdd y byd er mwyn darogan effaith cynnydd mewn deuocsid carbon gyda hyder
over the past 25 years , huge efforts have been made to build scientific models of the global climate to predict the effect of increased carbon dioxide with confidence
carwyn jones : mae'n gwneud synnwyr bod ffynhonnell adnewyddadwy o ynni yn llai tebygol o ollwng carbon deuocsid na thanwyddau ffosil
carwyn jones : it stands to reason that a renewable source of energy is less likely to emit carbon dioxide than fossil fuels
janet davies : gwyddoch mai ffigurau ar gyfer 2002 yw'r rhai diwethaf a gyhoeddwyd ar ollyngiadau nwyon ty gwydr a charbon deuocsid yng nghymru
janet davies : you will be aware that the latest published figures on welsh greenhouse gas and carbon dioxide emissions are for 2002
bydd defnyddio ynni gwynt i ddisodli'r broses o gynhyrchu trydan o orsafoedd tanwydd glo hyn , nas moderneiddiwyd , o gymorth sylweddol i gyflawni ein targedau lleihau carbon deuocsid
the use of wind power replacing electricity generation from older , unmodernised coal fuel stations will take us a considerable way towards meeting our carbon dioxide reduction targets