Article: The only indigenous mammals of Bermuda are five species of bats, all of which are also found in the eastern United States: Lasionycteris noctivagans, Lasiurus borealis, Lasiurus cinereus, Lasiurus seminolus and Perimyotis subflavus. Other commonly known fauna of Bermuda include its national bird, the Bermuda petrel or cahow. It was rediscovered in 1951 after having been thought extinct since the 1620s. It is important as an example of a Lazarus species. The government has a programme to protect it, including restoration of a habitat area. The Bermuda rock skink was long thought to have been the only indigenous land vertebrate of Bermuda, discounting the marine turtles that lay their eggs on its beaches. Recently through genetic DNA studies, scientists have discovered that a species of turtle, the diamondback terrapin, previously thought to have been introduced, pre-dated the arrival of humans in the archipelago. As this species spends most of its time in brackish ponds, some question whether it should be classified as a land vertebrate to compete with the skink's unique status.

Question: Why is there a debate as to dubbing the diamondback terrapin the oldest indigenous land vertebrate?
Ans: this species spends most of its time in brackish ponds

Here is a question about this article: The Hephthalites (or Ephthalites), also known as the White Huns, were a nomadic confederation in Central Asia during the late antiquity period. The White Huns established themselves in modern-day Afghanistan by the first half of the 5th century. Led by the Hun military leader Toramana, they overran the northern region of Pakistan and North India. Toramana's son Mihirakula, a Saivite Hindu, moved up to near Pataliputra to the east and Gwalior to the central India. Hiuen Tsiang narrates Mihirakula's merciless persecution of Buddhists and destruction of monasteries, though the description is disputed as far as the authenticity is concerned. The Huns were defeated by the Indian kings Yasodharman of Malwa and Narasimhagupta in the 6th century. Some of them were driven out of India and others were assimilated in the Indian society.
What is the answer to this question: What type of trib were the Hephthalites?
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So... nomadic confederation

The problem: Answer a question about this article:
The state is among the best in pre-kindergarten education, and the National Institute for Early Education Research rated it first in the United States with regard to standards, quality, and access to pre-kindergarten education in 2004, calling it a model for early childhood schooling. High school dropout rate decreased from 3.1 to 2.5 percent between 2007 and 2008 with Oklahoma ranked among 18 other states with 3 percent or less dropout rate. In 2004, the state ranked 36th in the nation for the relative number of adults with high school diplomas, though at 85.2 percent, it had the highest rate among southern states.
What percent of Oklahomans have graduated high school?
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The answer: 85.2 percent

Problem: Please answer a question about the following article about Light-emitting diode:
The vast majority of devices containing LEDs are "safe under all conditions of normal use", and so are classified as "Class 1 LED product"/"LED Klasse 1". At present, only a few LEDsextremely bright LEDs that also have a tightly focused viewing angle of 8 or lesscould, in theory, cause temporary blindness, and so are classified as "Class 2". The opinion of the French Agency for Food, Environmental and Occupational Health & Safety (ANSES) of 2010, on the health issues concerning LEDs, suggested banning public use of lamps which were in the moderate Risk Group 2, especially those with a high blue component in places frequented by children. In general, laser safety regulationsand the "Class 1", "Class 2", etc. systemalso apply to LEDs.
What type of LED can possibly cause blindness?
A: extremely bright LEDs

Question: Read this and answer the question

Most languages today, even in countries that have no direct link to Greco-Roman culture, use some variant of the name "Neptune" for the planet. However, in Chinese, Japanese, and Korean, the planet's name was translated as "sea king star" (), because Neptune was the god of the sea. In Mongolian, Neptune is called Dalain Van ( ), reflecting its namesake god's role as the ruler of the sea. In modern Greek the planet is called Poseidon (, Poseidonas), the Greek counterpart of Neptune. In Hebrew, "Rahab" (), from a Biblical sea monster mentioned in the Book of Psalms, was selected in a vote managed by the Academy of the Hebrew Language in 2009 as the official name for the planet, even though the existing Latin term "Neptun" () is commonly used. In Maori, the planet is called Tangaroa, named after the Maori god of the sea. In Nahuatl, the planet is called Tlaloccitlalli, named after the rain god Tlaloc.

What is the Mongolian name for Neptune?
Answer: Dalain Van

The development of a three-field rotation system for planting crops[AA] increased the usage of land from one half in use each year under the old two-field system to two-thirds under the new system, with a consequent increase in production. The development of the heavy plough allowed heavier soils to be farmed more efficiently, aided by the spread of the horse collar, which led to the use of draught horses in place of oxen. Horses are faster than oxen and require less pasture, factors that aided the implementation of the three-field system.
What invention led to an increase in efficiency in the farming of heavy soils?
the heavy plough