Mbiri ya matumba a zinyalala.

Mudzadabwa kuti matumba a zinyalala amagwiritsidwa ntchito kwambiri padziko lonse lapansi ndipo siatsopano.Matumba apulasitiki obiriwira omwe mumawawona tsiku lililonse amapangidwa ndi polyethylene.Adapangidwa mu 1950 ndi Harry Washrik ndi mnzake, Larry Hansen.Oyambitsa onsewa akuchokera ku Canada.

Kodi chinachitika ndi chiyani chisanachitike chikwama cha zinyalala?

Pele mbobakali kubikkila maanu kumakani aaya, bantu banji bakali kubikkila maanu mumbungano.Anthu ena amawotcha zinyalala.Posakhalitsa, anazindikira kuti kuwotcha ndi kukwirira kunalidi kowononga chilengedwe.Matumba a zinyalala amathandiza anthu kuthana ndi zinyalala bwino.

Matumba oyambirira a zinyalala

Poyamba, matumba a zinyalala ankagwiritsidwa ntchito pochita malonda.Adagwiritsidwa ntchito koyamba kuchipatala cha Winnipeg.Hansen ankagwira ntchito ku union carbide, yomwe idagula zopangazo kuchokera kwa iwo.Kampaniyo inapanga matumba oyambirira a zinyalala zobiriwira m’zaka za m’ma 1960 ndipo anawatcha kuti matumba a zinyalala apanyumba.

Zomwe zidapangidwa nthawi yomweyo zidayambitsa chidwi ndipo zidagwiritsidwa ntchito m'mabizinesi angapo ndi mabanja.Pamapeto pake, idakhala chinthu chodziwika bwino.

Chikwama chojambula

Mu 1984, mbiri ya matumba a zinyalala inalowa mumsika, zomwe zinapangitsa kuti anthu azinyamula matumba odzaza mosavuta.Chojambula choyambirira chinali chopangidwa ndi pulasitiki yolimba kwambiri.Matumbawa ndi olimba ndipo ali ndi njira yotseka yolimba.Koma matumbawa ndi okwera mtengo.Matumba ojambulira ndi otchuka kunyumba komanso osavuta kunyamula, kotero ndidawagula ndi mtengo wowonjezera.