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Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 β 2fe2o3. identify the value of x that will balance the equation.
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10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii
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Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples
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Facilitated diffusion across a biological membrane requires and moves a substance its concentratio...
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