Problem: Dark meat, which avian myologists refer to as "red muscle", is used for sustained activitychiefly walking, in the case of a chicken. The dark colour comes from the protein myoglobin, which plays a key role in oxygen uptake and storage within cells. White muscle, in contrast, is suitable only for short bursts of activity such as, for chickens, flying. Thus, the chicken's leg and thigh meat are dark, while its breast meat (which makes up the primary flight muscles) is white. Other birds with breast muscle more suitable for sustained flight, such as ducks and geese, have red muscle (and therefore dark meat) throughout. Some cuts of meat including poultry expose the microscopic regular structure of intracellular muscle fibrils which can diffract light and produce iridescent colours, an optical phenomenon sometimes called structural colouration.
Are there reasons for the dark meat that poultry has?
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Answer: The dark colour comes from the protein myoglobin, which plays a key role in oxygen uptake and storage within cells

Problem: Over the years, the Mughals began to have internal disputes which greatly distracted them at times. The Mughal Empire continued to weaken, and with the decline of the Mughal Empire in the 18th century, Rajputana came under the suzerainty of the Marathas. The Marathas, who were Hindus from the state of what is now Maharashtra, ruled Rajputana for most of the eighteenth century. The Maratha Empire, which had replaced the Mughal Empire as the overlord of the subcontinent, was finally replaced by the British Empire in 1818.
What century marked the decline of the British Empire?
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Answer: unanswerable

Problem: A different format, CD-4 (not to be confused with compact disc), by RCA, encoded the front-rear difference information on an ultrasonic carrier, which required a special wideband cartridge to capture it on carefully calibrated pickup arm/turntable combinations. CD-4 was even less successful than the two matrixed formats. (A further problem was that no cutting heads were available that could handle the HF information. That was remedied by cutting at half the speed. Later, the special half-speed cutting heads and equalization techniques were employed to get a wider frequency response in stereo with reduced distortion and greater headroom.)
What were potential benefits of the CD-4 format?
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Answer:
reduced distortion and greater headroom