Y naturiaethwr Iolo Williams sy'n trafod effaith ddinistriol sbwriel plastig ar fywyd gwyllt. Presenter Iolo Williams discusses the effect of plastic pollution on wildlife. Show more
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Y naturiaethwr Iolo Williams sy'n trafod effaith ddinistriol sbwriel plastig ar fywyd gwyllt. Presenter Iolo Williams discusses the effect of plastic pollution on wildlife. Show more