When the impacts discussed above are ‘mapped’ a causal chain can be identified and it becomes apparent that a number of important assumptions are sometimes made. [
Pan gaiff yr effeithiau a drafodir uchod eu ‘mapio’, daw cadwyn effaith i’r amlwg, a gallwn weld fod nifer o ragdybiaethau pwysig yn cael eu gwneud weithiau. [