Context and question: Conventional bleaching of wood pulp using elemental chlorine produces and releases into the environment large amounts of chlorinated organic compounds, including chlorinated dioxins. Dioxins are recognized as a persistent environmental pollutant, regulated internationally by the Stockholm Convention on Persistent Organic Pollutants. Dioxins are highly toxic, and health effects on humans include reproductive, developmental, immune and hormonal problems. They are known to be carcinogenic. Over 90% of human exposure is through food, primarily meat, dairy, fish and shellfish, as dioxins accumulate in the food chain in the fatty tissue of animals.
Where are dioxins stored in our animal sources of food?
Answer: fatty tissue
Context and question: The number of species of flowering plants is estimated to be in the range of 250,000 to 400,000. This compares to around 12,000 species of moss or 11,000 species of pteridophytes, showing that the flowering plants are much more diverse. The number of families in APG (1998) was 462. In APG II (2003) it is not settled; at maximum it is 457, but within this number there are 55 optional segregates, so that the minimum number of families in this system is 402. In APG III (2009) there are 415 families.
What are the minimum number of families in the APG system?
Answer: 402
Context and question: Somerset is an important supplier of defence equipment and technology. A Royal Ordnance Factory, ROF Bridgwater was built at the start of the Second World War, between the villages of Puriton and Woolavington, to manufacture explosives. The site was decommissioned and closed in July 2008. Templecombe has Thales Underwater Systems, and Taunton presently has the United Kingdom Hydrographic Office and Avimo, which became part of Thales Optics. It has been announced twice, in 2006 and 2007, that manufacturing is to end at Thales Optics' Taunton site, but the trade unions and Taunton Deane District Council are working to reverse or mitigate these decisions. Other high-technology companies include the optics company Gooch and Housego, at Ilminster. There are Ministry of Defence offices in Bath, and Norton Fitzwarren is the home of 40 Commando Royal Marines. The Royal Naval Air Station in Yeovilton, is one of Britain's two active Fleet Air Arm bases and is home to the Royal Navy's Lynx helicopters and the Royal Marines Commando Westland Sea Kings. Around 1,675 service and 2,000 civilian personnel are stationed at Yeovilton and key activities include training of aircrew and engineers and the Royal Navy's Fighter Controllers and surface-based aircraft controllers.
When was Thales Underwater Systems launched?
Answer:
unanswerable