Nyora ndima pfupi yenyaya iri pamusoro penyaya inotevera:  MunhuX anotapurwa nesayenzi
Chokwadi, heino ndima pfupi: Kacen aifarira kudzidza nezvezvirimwa uye kuti zvinokura sei. Kacen yakakanganiswa nephotosynthesis uye nzira iyo yakabatsira nayo miti kukura.