I disagree with the current answer. I believe the answer is the one you have selected. This is because the three domains of life are separated into 3 categories, bacteria, archeabacteria, and eukaryotes. Archeabacteria are prokaryotic, and possess no true nucleus.
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It is a laboratory method used to separate mixtures of DNA, RNA, or proteins according to molecular size.
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The part of a riverbend that will experience the most erosion is the inside corner, this is because the water will be hitting it on two sides, the erosion will likely curve the inside corner more.
Answer: Humans and other organisms use the soil to decompose these waste materials into new materials.
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