Irina usually takes - DNA extractions at work., As a scientist I always have to - make logical conclusions, Archaeologists often meet - looters and informants, It is important to gather - evidence at a research stage., We always work - in teams at the Scientific Research Center., I have to deliver - a conference next August. , You can draw some - conclusions from your experiments., We use a microscope - to magnify microscopic samples., It is possible to date - organic remains in artefacts., We almost always sift  - the soil from exavation sites.,

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