

Bladderworts have medicinal uses.
https://pmc.ncbi.nlm.nih.gov/articles/PMC3353273/
3.2. Potential as Medicinal Crop Utricularia is recorded to be edible and high in nutrients. Some species used as folk remedies are mildly astringent and diuretic. U. caerulea is used to dress wounds while U. bifida is used to treat urinary diseases. Although yet to be widely researched, the medicinal potential of this species-rich genus is immense. In Peninsular Malaysia, U. bifida and U. minutissima are pioneers of open disturbed wetland and are often locally abundant, although U. caerulea is increasingly rare. U. bifida is highly suited for acidic damp soils. Neither chemical nor organic fertilisation is necessary. It can be cultivated without having to modify bad drainage or liming the soil to increase pH, therefore, it is a suitable alternative for small-scale herb cultivation on nutrient-poor, waterlogged soils.





Yes, “weapons grade” has a higher purity being almost entirely made of fissile isotope Pu-239
“Reactor grade” has a greater variety of isotopes.
The functional difference is that the higher purity is required to make nuclear bombs, hence “weapons grade.” Purity was a significant hurdle in nuclear arms development and one if the reasons the US got the bomb before Germany or the USSR which both struggled to get sufficient purity.