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

ugqi egbe uthi ukutshaya icuba kuvelisa amachiza angaphezulu kwama7 000; ama250 walamachiza angqinwe njengawungcolisayo umzimba womntu.
