He aha ka wela e hiki ai ke pale aku i nā kukui pahū

1. Ka wela ambient: -20 i 100 ℃.

2. He kūpono no nā kaiapuni me ka wai kiʻekiʻe, lepo, a me ka haʻahaʻa.

3. Hoʻohana nui ʻia i nā kukui ʻoihana no ka ʻaila, kemika, uapo, meaʻai, lāʻau lapaʻau, a hale hana hoʻonohonoho.