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From the German point of view, March 1941 saw an improvement. The Luftwaffe flew 4,000 sorties that month, including 12 major and three heavy attacks. The electronic war intensified but the Luftwaffe flew major inland missions only on moonlit nights. Ports were easier to find and made better targets. To confuse the British, radio silence was observed until the bombs fell. X- and Y-Gerat beams were placed over false targets and switched only at the last minute. Rapid frequency changes were introduced for X-Gerat, whose wider band of frequencies and greater tactical flexibility ensured it remained effective at a time when British selective jamming was degrading the effectiveness of Y-Gerat.

Why was the X-Gerat frequencies used more?
Answer: British selective jamming was degrading the effectiveness of Y-Gerat
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From an evolutionary-biological perspective, the function of the brain is to provide coherent control over the actions of an animal. A centralized brain allows groups of muscles to be co-activated in complex patterns; it also allows stimuli impinging on one part of the body to evoke responses in other parts, and it can prevent different parts of the body from acting at cross-purposes to each other.

The function of the brain from an evolutionary-biological thought is what?
Answer: provide coherent control over the actions of an animal
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Microsoft released minimum hardware requirements for tablet and laplet devices to be "certified" for Windows 8, and defined a convertible form factor as a standalone device that combines the PC, display and rechargeable power source with a mechanically attached keyboard and pointing device in a single chassis. A convertible can be transformed into a tablet where the attached input devices are hidden or removed leaving the display as the only input mechanism. On March 12, 2013, Microsoft amended its certification requirements to only require that screens on tablets have a minimum resolution of 1024768 (down from the previous 1366768). The amended requirement is intended to allow "greater design flexibility" for future products.

Why did Microsoft decrease the required resoultion for tablets?
Answer:
to allow "greater design flexibility" for future products