ndi Cholumikizira mpweya chipangizo chomwe chimayang'ana mpweya wochokera ku gasi (nthawi zambiri mpweya wozungulira) pochotsa nayitrogeni kuti apereke mpweya wopangidwa ndi okosijeni.wathu wa okosijeni Mpweya ukhoza kukhala wachipatala kapena kunyumba.