Kyūjitai form of 生物物理学 (“biophysics”)

(law, biology) invasive species that is restricted under Japanese law

(marine biology) benthos

(ecology) biodiversity

microbiology

“a hundred days of sermonizing, one fart” → a metaphor for how something that one has put great effort into can come to nothing after even a slight mistake, much as a hundred days of serious spiritual study can be lost to the winds