egbe utsi kubhema ligwayi kukhicita emakhemikhali langetulu kwala7 000; lange250 alamakhemikhali acinisekisiwe kutsi angushevu emtimbeni wemuntfu.

ukwengeza kulokhu, ukubhema ugwayi kubulala inqwaba yezitho zomzimba wakho futhi ngokuvamile uma sezifile umzimba awubi namandla anele ukulwa nezifo.
