The problem: Answer a question about this article:
As a side effect of the electrochemical processes used by neurons for signaling, brain tissue generates electric fields when it is active. When large numbers of neurons show synchronized activity, the electric fields that they generate can be large enough to detect outside the skull, using electroencephalography (EEG) or magnetoencephalography (MEG). EEG recordings, along with recordings made from electrodes implanted inside the brains of animals such as rats, show that the brain of a living animal is constantly active, even during sleep. Each part of the brain shows a mixture of rhythmic and nonrhythmic activity, which may vary according to behavioral state. In mammals, the cerebral cortex tends to show large slow delta waves during sleep, faster alpha waves when the animal is awake but inattentive, and chaotic-looking irregular activity when the animal is actively engaged in a task. During an epileptic seizure, the brain's inhibitory control mechanisms fail to function and electrical activity rises to pathological levels, producing EEG traces that show large wave and spike patterns not seen in a healthy brain. Relating these population-level patterns to the computational functions of individual neurons is a major focus of current research in neurophysiology.
What type of test is used to tell that a brain is active even during sleep?
****
The answer: EEG

Problem: Please answer a question about the following article about Wood:
In the tree a knot is either the base of a side branch or a dormant bud. A knot (when the base of a side branch) is conical in shape (hence the roughly circular cross-section) with the inner tip at the point in stem diameter at which the plant's vascular cambium was located when the branch formed as a bud.
Other than the base of a side branch, what tree feature causes a knot?
A: a dormant bud

Question: Read this and answer the question

With the help of Mises, in the late 1920s Hayek founded and served as director of the Austrian Institute for Business Cycle Research, before joining the faculty of the London School of Economics (LSE) in 1931 at the behest of Lionel Robbins. Upon his arrival in London, Hayek was quickly recognised as one of the leading economic theorists in the world, and his development of the economics of processes in time and the co-ordination function of prices inspired the ground-breaking work of John Hicks, Abba Lerner, and many others in the development of modern microeconomics.

What subject did Hayek's works influence and inspire?
Answer: modern microeconomics

Problem: Following a custom she maintained throughout her widowhood, Victoria spent the Christmas of 1900 at Osborne House on the Isle of Wight. Rheumatism in her legs had rendered her lame, and her eyesight was clouded by cataracts. Through early January, she felt "weak and unwell", and by mid-January she was "drowsy ... dazed, [and] confused". She died on Tuesday, 22 January 1901, at half past six in the evening, at the age of 81. Her son and successor King Edward VII, and her eldest grandson, Emperor Wilhelm II of Germany, were at her deathbed. Her favourite pet Pomeranian, Turri, was laid upon her deathbed as a last request.
Who was Queen Victoria's successor after her death?
The answer is the following: King Edward VII

Pubs that cater for a niche clientele, such as sports fans or people of certain nationalities are known as theme pubs. Examples of theme pubs include sports bars, rock pubs, biker pubs, Goth pubs, strip pubs, gay bars, karaoke bars and Irish pubs.
In what sort of theme pub could one find visitors singing with musical accompaniment?
karaoke bars

Here is a question about this article: In 1838, Claridge obtained patents in Scotland on 27 March, and Ireland on 23 April, and in 1851 extensions were sought for all three patents, by the trustees of a company previously formed by Claridge. This was Claridge's Patent Asphalte Company, formed in 1838 for the purpose of introducing to Britain "Asphalte in its natural state from the mine at Pyrimont Seysell in France", and "laid one of the first asphalt pavements in Whitehall". Trials were made of the pavement in 1838 on the footway in Whitehall, the stable at Knightsbridge Barracks, "and subsequently on the space at the bottom of the steps leading from Waterloo Place to St. James Park". "The formation in 1838 of Claridge's Patent Asphalte Company (with a distinguished list of aristocratic patrons, and Marc and Isambard Brunel as, respectively, a trustee and consulting engineer), gave an enormous impetus to the development of a British asphalt industry". "By the end of 1838, at least two other companies, Robinson's and the Bastenne company, were in production", with asphalt being laid as paving at Brighton, Herne Bay, Canterbury, Kensington, the Strand, and a large floor area in Bunhill-row, while meantime Claridge's Whitehall paving "continue(d) in good order".
What is the answer to this question: By 1838 how many companies beside Claridge's were offering asphalt?
****
So...
two