The problem: Answer a question about this article:
The major time divisions of classical music up to 1900 are the early music period, which includes Medieval (5001400) and Renaissance (14001600) eras, and the Common practice period, which includes the Baroque (16001750), Classical (17501830) and Romantic (18041910) eras. Since 1900, classical periods have been reckoned more by calendar century than by particular stylistic movements that have become fragmented and difficult to define. The 20th century calendar period (19012000) includes most of the early modern musical era (18901930), the entire high modern (mid 20th-century), and the first 25 years of the contemporary or postmodern musical era (1975current). The 21st century has so far been characterized by a continuation of the contemporary/postmodern musical era.
What era has the 21st century has been characterized by?
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The answer: the contemporary/postmodern musical era

The problem: Answer a question about this article:
The Endangered Species Conservation Act (P. L. 91-135), passed in December, 1969, amended the original law to provide additional protection to species in danger of "worldwide extinction" by prohibiting their importation and subsequent sale in the United States. It expanded the Lacey Act's ban on interstate commerce to include mammals, reptiles, amphibians, mollusks and crustaceans. Reptiles were added mainly to reduce the rampant poaching of alligators and crocodiles. This law was the first time that invertebrates were included for protection.
What important precedent did this set for invertebrates?
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The answer: This law was the first time that invertebrates were included for protection

The problem: Answer a question about this article:
In contrast, procedural memory (or implicit memory) is not based on the conscious recall of information, but on implicit learning. It can best be summarized as remember how to do something. Procedural memory is primarily employed in learning motor skills and should be considered a subset of implicit memory. It is revealed when one does better in a given task due only to repetition - no new explicit memories have been formed, but one is unconsciously accessing aspects of those previous experiences. Procedural memory involved in motor learning depends on the cerebellum and basal ganglia.
What set of skills is reliant on procedural memory?
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The answer: motor skills

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So-called voiced aspirated consonants are nearly always pronounced instead with breathy voice, a type of phonation or vibration of the vocal folds. The modifier letter after a voiced consonant actually represents a breathy-voiced or murmured dental stop, as with the "voiced aspirated" bilabial stop b in the Indo-Aryan languages. This consonant is therefore more accurately transcribed as b, with the diacritic for breathy voice, or with the modifier letter b, a superscript form of the symbol for the voiced glottal fricative .
The b in the Indo-Aryan languages is better transcribed how for breathy voice?
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The answer:
b, with the diacritic