Nsanamira yobiriwira yokongola kwambiri imagwiritsidwa ntchito pochirikiza mipanda ndipo mafosholo olumikizidwa pa nsanamirayo angapereke mphamvu yogwirira nthaka mwamphamvu.
Zipilala kapena zipilala zomwe zili pamtengo wa chitsulocho zimapangidwa mwapadera kuti ziteteze waya wotchingira kuti usagwedezeke mmwamba ndi pansi. Chifukwa cha mphamvu zake zokoka komanso kulimba kwake, zakhala zikugwiritsidwa ntchito kwambiri ku USA.
































