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Index > Nature
 avalanche eirlithriad  volcano llosgfynydd  tsunami tsunami  lightning mellten  evolution esblygiad  acid asid  atmosphere atmosffer air awyr  flood dilyw  animal anifail  archipelago ynysfor  weather tywydd  dawn gwawr  bacteria bacteriwm  beach traeth  birth genedigaeth  bog mawnog  brook nant  cell cell  plain maestir  twilight cyfnos  oil petroliwm  current cyfredol  dam argae  death marwolaeth  desert anialwch  land pridd  Earth Y Ddaear  earth pridd  erosion erydiad  volcanic eruption tarddiad  waterfall rhaeadr  farm fferm  field parc  fire tân  fire fflam  plant planhigyn  flower blodyn  leaf deilen  forest coedwig  spring ffynnon  smoke llid  glacier rhewlif  gravity disgyrchiant  ground pridd  seaport porthladd  hayfield clun  hill bryn  human dyn  hurricane corwynt |
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