Economics of biodiversity economic loss led by the invasive species and vectors can be reduced. However, even with extensive research into the control species, their use is a risky business, as in the importation of the Cane Toad to control beetles in Queensland. A wide variety of plants, animals and fungi are used as medicine. Wild plant species have been used for medicinal purposes since before the beginning of recorded history. Over 60% of world population depends on the plant medicines for their primary health care. For example, quinine comes from the cinchona tree has been used to treat malaria, digitalis from the
Nothing comes from nothing the song "Something Good", which contains the lyrics: "Nothing comes from nothing / nothing ever could". Although the song is devoid of intentional metaphysical connotations, Maria's time in Nonnberg Abbey would have familiarized her with the phrase, which is used in Catholic philosophy to explain God's gratuitous act of , namely, that only the source of all being can give creation its existence. Earlier in the film, in the well-known song "Maria", Maria's fellow nuns lament that there is "many a thing she ought to understand" and that she is "not an asset to the abbey". It is unclear if