The following sulfonylureas have been commercialized for weed control: amidosulfuron, azimsulfuron, bensulfuron-methyl, chlorimuron-ethyl, ethoxysulfuron, flazasulfuron, flupyrsulfuron-methyl-sodium, halosulfuron-methyl, imazosulfuron, nicosulfuron, oxasulfuron, primisulfuron-methyl, pyrazosulfuron-ethyl, rimsulfuron, sulfometuron-methyl Sulfosulfuron, terbacil, bispyribac-sodium, cyclosulfamuron, and pyrithiobac-sodium. Nicosulfuron, triflusulfuron methyl, and chlorsulfuron are broad-spectrum herbicides that kill plants by inhibiting the enzyme acetolactate synthase. In the 1960s, more than 1 kg/ha (0.89 lb/acre) crop protection chemical was typically applied, while sulfonylureates allow as little as 1% as much material to achieve the same effect.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): The amount of material used as a crop protection measure decreased from 1kg/ha in what year to its current 1%?
Ah, so.. 1960s

The island was administered as an extension of Virginia by the Company until 1614. Its spin-off, the Somers Isles Company, took over in 1615 and managed the colony until 1684. At that time, the company's charter was revoked, and the English Crown took over administration. The islands became a British colony following the 1707 unification of the parliaments of Scotland and England, which created the Kingdom of Great Britain. After 1949, when Newfoundland became part of Canada, Bermuda was automatically ranked as the oldest remaining British Overseas Territory. Since the return of Hong Kong to China in 1997, it is the most populous Territory. Its first capital, St. George's, was established in 1612 and is the oldest continuously inhabited English town in the New World.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In what year did Bermuda enter British rule?
Ah, so.. 1707

On 2 November 2006, China announced that from 2008 BeiDou would offer an open service with an accuracy of 10 meters, timing of 0.2 microseconds, and speed of 0.2 meters/second.[citation needed]
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): China would offer a closed service with an accuracy of what?
Ah, so..
unanswerable