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15 ! come and answer! a(n) disease is caused by a pathogen and can spread among organisms. a infectious b noninfectious c toxic d contaminated
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The presence of iron oxides in rocks, formed during a specific time period, can be used as evidence of oxygen in the atmosphere during that time period. question 18 options: true false
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Heat energy goes from: a. warmer objects to cooler objects b. cooler objects to warmed objects c. larger objects to smaller objects
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Why does each dna sample produce two bands in this PCR? (urgent help needed, its due in 40 mins)
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