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Ions are an atom or group of atoms that either has a positive or negative charge. An ion with a negative charge is called an anion and one with a positive charge is a cation.
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Virchow was a German scientist whose most important work was in the filed of cellular biology and pathology.His scientific experiments and examinations aimed to disprove the idea of spontaneous generation. This idea is based on an assumption that life can spontaneously appear out of non-living matter. After years of scientific work he concluded that only living cells can produce other cells, or that only life can produce life.Therefore, if it was somehow proven that cells can be generated from non-living matter, that would disprove his findings.
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Unlike inbreeding, hybridization is more likely to cause genetic abnormalities.
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C. The evolution of many species from a single ancestor over a long period of time
