Phase-contrast microscopy depends on the refractive index of the region of specimen and generates image in which we see a pattern of 

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#Question id: 23516

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Zone of atmosphere near the ground is

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#Question id: 23517

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Approximately how many people are alive today?

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#Question id: 23518

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Which of the following is the transition layer between stratosphere and the mesosphere?

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#Question id: 23519

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Emphysema disease is caused by

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#Question id: 23520

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Submerged hydrophytes have commonly dissected leaves for

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#Question id: 23521

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Ozone layer depletion or hole in ozone layer is being chiefly found in