nō te kāwā 40 - waewae, he whakarara rahi ngā roa i hangaia hei whakamahere moenga mō ngā taonga matua rānei, ā he mea hou ki te whakatere i ngā taonga wai rānei, ngā taonga hau rānei i runga i ngā tawāhi nui, ko te whanaketanga tonu o te whakatere i waenga i ngā ratonga. Ki te pūnaha matua o 40 waewae, ka noho ngā roa nei hei whakarite i te rahi nui o te whakamahere, e pai ana ki te whakatere i ngā taonga nui. I hangaia ngā roa nei i runga i ngā rara rangatira pērā i te toki rānei, te toki maero rānei, me ngā whiringa hoki mō te whakatakoto rānei, te whakaputu rānei i te hunga kaiwhakatere. E whakarite ana ngā roa nei i ngā whakarere me ngā puipui hei whakaae i te mahi whakatikatika, te whakatere, me te whakawhiti i ngā taonga. Ka whakaritea ki ngā paerewa whakatere o te ao, me te whakauru pai ki ngā take tuhinga o te ao mō ngā whenua pērā i ngā petrochemicals, kai rānei, inu rānei, me ngā chemical, e tirotiro ana ki te whakatere pai me te tirotiro pai i ngā taonga nui.