Ịrụ ọrụ
1. Ike quartz doro anya nwere ike ime ka uche doo anya, na-enyere aka melite arụmọrụ ọrụ, ebe nchekwa na nghọta.
2. Ọ nwere ike ibelata radieshon eletrọnịkị dị ka kọmputa, TV na microwaves, na-echebe ahụ pụọ na nnyonye anya karịrị akarị.
3. bara uru maka ahụike, ọ na-edozi ahụ-uche na mmetụta uche, na-enyere aka itinye uche.
4. Na-akwalite oghere ndọta nkeonwe ma na-akpali ikike.
5. Edebere na mpaghara akụ na ụba, ọ na-eme ka ume ike na-abawanye ụba ego; etinyere n'azụ n'akụkụ aka nri onye nlekọta, ọ na-enyere aka guzobe ikike.