Article: The deeper ancestral demography of Bermuda's population has been obscured by the ethnic homogenisation of the last four centuries. There is effectively no ethnic distinction between black and white Bermudians, other than those characterising recent immigrant communities. In the 17th century, this was not so. For the first hundred years of settlement, white Protestants of English heritage were the distinct majority, with white minorities of Irish (the native language of many of whom can be assumed to have been Gaelic) and Scots sent to Bermuda after the English invasions of their homelands that followed the English Civil War. Non-white minorities included Spanish-speaking, free (indentured) blacks from the West Indies, black chattel slaves primarily captured from Spanish and Portuguese ships by Bermudian privateers, and Native Americans, primarily from the Algonquian and other tribes of the Atlantic seaboard, but possibly from as far away as Mexico. By the 19th century, the white ethnically-English Bermudians had lost their numerical advantage. Despite the banning of the importation of Irish, and the repeated attempts to force free blacks to emigrate and the owners of black slaves to export them, the merging of the various minority groups, along with some of the white English, had resulted in a new demographic group, "coloured" (which term, in Bermuda, referred to anyone not wholly of European ancestry) Bermudians, gaining a slight majority. Any child born before or since then to one coloured and one white parent has been added to the coloured statistic. Most of those historically described as "coloured" are today described as "black", or "of African heritage", which obscures their non-African heritage (those previously described as "coloured" who were not of African ancestry had been very few, though the numbers of South Asians, particularly, is now growing. The number of persons born in Asian countries doubled between the 2000 and the 2010 censuses), blacks have remained in the majority, with new white immigration from Portugal, Britain and elsewhere countered by black immigration from the West Indies.

Question: Why is it problematic that the "coloured" population of Bermuda is now referred to as "black" or "African heritage"?
Ans: obscures their non-African heritage


Article: 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.

Question: What does the large number of flowering plant species indicate is true of them in general?
Ans: diverse


Article: Phase change materials such as paraffin wax and Glauber's salt are another thermal storage media. These materials are inexpensive, readily available, and can deliver domestically useful temperatures (approximately 64 °C or 147 °F). The "Dover House" (in Dover, Massachusetts) was the first to use a Glauber's salt heating system, in 1948. Solar energy can also be stored at high temperatures using molten salts. Salts are an effective storage medium because they are low-cost, have a high specific heat capacity and can deliver heat at temperatures compatible with conventional power systems. The Solar Two used this method of energy storage, allowing it to store 1.44 terajoules (400,000 kWh) in its 68 cubic metres storage tank with an annual storage efficiency of about 99%.

Question: The first Glauber's salt heating system was first used where?
Ans: The "Dover House"


Article: In mammals, preparation for digestion begins with the cephalic phase in which saliva is produced in the mouth and digestive enzymes are produced in the stomach. Mechanical and chemical digestion begin in the mouth where food is chewed, and mixed with saliva to begin enzymatic processing of starches. The stomach continues to break food down mechanically and chemically through churning and mixing with both acids and enzymes. Absorption occurs in the stomach and gastrointestinal tract, and the process finishes with defecation.

Question: What happens in the stomach after the food is chewed and mixed with starches?
Ans:
The stomach continues to break food down mechanically and chemically through churning and mixing with both acids and enzymes