Trials in which jury selection makes a decisive difference are rare, they believe: most cases are decided on the evidence.

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The Commons education select committee had said there was no difference between that approach and selection by academic ability.

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Those mutations that make a difference to the operations of genes will be affected by natural selection.

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But bacteria and viruses breed fast, so natural selection has time, within the span of a human life, to make a difference.

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The input and output selection is similar to what you'll find on the 350, with the biggest difference being that the LED lights actually dance around a bit while it is streaming video.

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The difference is that Schwab plans to do it on a grander scale, offering more selection, hand-holding and distribution through its investment advisers.

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The key difference: the Thai scheme was administered by the government, which has acknowledged problems with the selection process and the speed of implementation.

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