Fel llawer o’r byd datblygedig, yng Nghymru, mae colli coedwigoedd, ysbeilio moroedd, a’r llygredd a achosir gan weithgarwch dynol wedi arwain at ddiflaniad tua hanner bywyd anifeiliaid a phlanhigion Cymru.
Like much of the developed world, in Wales, the loss of forests, the plundering of seas, and the pollution caused by human activity has led to the vanishing of around half of Wales’ animal and plant life.