Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. Cross-pollination happens when the wind or animals move pollen from one plant to fertilize the ovules on a different plant.
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The DNA must be copied so there is a full set of DNA to pass on to each daughter cell.
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if i'm not mistaken it's the nucleic acid.
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because not every virus or disease has the same DNA or RNA
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sand silt dead crustaceans and stones