Ụlọ ọrụ anyị nwere usoro nlekọta ahụike zuru oke nke sayensị.Anyị nwere oke mma, ezigbo aha na ọrụ kacha mma.Ebupụla ngwaahịa anyị na mba na mpaghara 50. Dị ka Europe, Middle East, South America, Africa, Southeast Asia.Anyị ụlọ ọrụ guzosie ike ogologo okwu enyi na enyi imekọ ihe ọnụ mmekọrịta na multi-mba agha na uwe ojii ngwaahịa na-azụ ahịa, na-arụkọ ọrụ ọnụ maka ụwa nkwekọ na nkwụsi ike !