B. DNA is short for <span>Deoxyribo nucleic acid, which is nucleic acid..
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For the answer tot he questions above, the answer is "paleoanthropology"
It is also called human paleontology. It is a <span>branch of anthropology that is concerned with the origins and development of the early humans.
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Because of the soil the rocks are in. If They stayed in that soil for a while which affected the compounds, shifting the mineral composition.
Your answer is sexual reproduction. Sexual reproduction is when two distinct types of reproductive cells known as gametes fuse together, involving female's egg and male's sperm.
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