Why are leaves Dorsoventrally flattened?

Why are leaves Dorsoventrally flattened? Most of the land plants generally have dorsoventrally flat leaves, maximizing the surface area of both upper (adaxial) side and lower (abaxial) side. The former is specialized for light capturing for photosynthesis and the latter is specialized
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What is the use of Ext JS?

What is the use of Ext JS? Ext JS is a popular JavaScript framework which provides rich UI for building web applications with cross-browser functionality. Ext JS is basically used for creating desktop applications. It supports all the modern browsers such as
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What breaks the sound barrier?

What breaks the sound barrier? An airplane, a bullet, or the tip of a bullwhip can create this effect; they all produce a crack. This pressure change created by the sonic boom can be quite damaging. In the case of airplanes, shock
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