Other communities, such as those who share an interest in a particular topic or sport, should be considered as valid groups to prepare for emergencies.
O’r herwydd, dylid ystyried cymunedau eraill (megis y rheiny sy’n rhannu diddordeb mewn pwnc neu gamp benodol) yn grwpiau dilys y gellir paratoi ar gyfer argyfyngau ynddynt.