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Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver. The Earth's crust from the surface to 25 km (15 mi) down is calculated to contain 1017 kg (21017 lb) of uranium while the oceans may contain 1013 kg (21013 lb). The concentration of uranium in soil ranges from 0.7 to 11 parts per million (up to 15 parts per million in farmland soil due to use of phosphate fertilizers), and its concentration in sea water is 3 parts per billion.
Why is the concentrate of uranium in farmland so low?
A: unanswerable

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In 2013 the United States Patent & Trademark Office approximated that the worth of intellectual property to the U.S. economy is more than US$5 trillion and creates employment for an estimated 18 million American people. The value of intellectual property is considered similarly high in other developed nations, such as those in the European Union. In the UK, IP has become a recognised asset class for use in pension-led funding and other types of business finance. However, in 2013, the UK Intellectual Property Office stated: "There are millions of intangible business assets whose value is either not being leveraged at all, or only being leveraged inadvertently".
How much was the worth of intellectual property to the U.S. economy in 2013?
A: more than US$5 trillion

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Sport forms an integral part of German life, as demonstrated by the fact that 27 million Germans are members of a sports club and an additional twelve million pursue such an activity individually. Football is by far the most popular sport, and the German Football Federation (Deutscher Fuballbund) with more than 6.3 million members is the largest athletic organisation in the country. It also attracts the greatest audience, with hundreds of thousands of spectators attending Bundesliga matches and millions more watching on television.
What has thousands of television spectators?
A: unanswerable

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The Soviet Union challenged the legitimacy of the war for several reasons. The ROK Army intelligence upon which Resolution 83 was based came from U.S. Intelligence; North Korea was not invited as a sitting temporary member of the UN, which violated UN Charter Article 32; and the Korean conflict was beyond the UN Charter's scope, because the initial northsouth border fighting was classed as a civil war. Because the Soviet Union was boycotting the Security Council at the time, legal scholars posited that deciding upon an action of this type required the unanimous vote of the five permanent members.
Where did the intelligence information that led to the passage of Resolution 83 come from?
A:
U.S. Intelligence