It is necessary to find a means to reduce or prevent damage induced by environmental components such as heat, light or oxygen.
Anyị kwesịrị inwe omume ọma nke ihicha oghere ọma ka iji belata ma ọ bụ zere mmetọ kpatara ụmụ mmadụ, dị ka akara mkpisiaka ma ọ bụ spittle.