QUES: Prior to the one-drop rule, different states had different laws regarding color. More importantly, social acceptance often played a bigger role in how a person was perceived and how identity was construed than any law. In frontier areas, there were fewer questions about origins. The community looked at how people performed, whether they served in the militia and voted, which were the responsibilities and signs of free citizens. When questions about racial identity arose because of inheritance issues, for instance, litigation outcomes often were based on how people were accepted by neighbors.
What played the smallest role in how a person was perceived?

ANS: unanswerable

QUES: In 2002 the Antarctic Peninsula's Larsen-B ice shelf collapsed. Between 28 February and 8 March 2008, about 570 km2 (220 sq mi) of ice from the Wilkins Ice Shelf on the southwest part of the peninsula collapsed, putting the remaining 15,000 km2 (5,800 sq mi) of the ice shelf at risk. The ice was being held back by a "thread" of ice about 6 km (4 mi) wide, prior to its collapse on 5 April 2009. According to NASA, the most widespread Antarctic surface melting of the past 30 years occurred in 2005, when an area of ice comparable in size to California briefly melted and refroze; this may have resulted from temperatures rising to as high as 5 C (41 F).
How large was the ice chunk that melted and refroze?

ANS: California

QUES: Early Islamic philosophy and Islamic metaphysics, imbued as it is with Islamic theology, distinguishes more clearly than Aristotelianism between essence and existence. Whereas existence is the domain of the contingent and the accidental, essence endures within a being beyond the accidental. The philosophy of Ibn Sina, particularly that part relating to metaphysics, owes much to al-Farabi. The search for a definitive Islamic philosophy separate from Occasionalism can be seen in what is left of his work.
Who does Ibn Sina's philosophy owe much to?

ANS: al-Farabi

QUES: Acid-fast bacteria, such as Mycobacteria, are resistant to decolorization by acids during staining procedures. The high mycolic acid content of Mycobacteria, is responsible for the staining pattern of poor absorption followed by high retention. The most common staining technique used to identify acid-fast bacteria is the Ziehl-Neelsen stain or acid-fast stain, in which the acid-fast bacilli are stained bright-red and stand out clearly against a blue background. L-form bacteria are strains of bacteria that lack cell walls. The main pathogenic bacteria in this class is Mycoplasma (not to be confused with Mycobacteria).
What is the most typical staining technique used to identify acid-fast bacteria?

ANS:
Ziehl-Neelsen stain