Location B is the answer to question
Examples of chemical mutagens would be nicotine and other compounds in cigarette smoke that cause mutations involved in lung cancer.
C - Eukaryotes and heterotrophic.
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Earth and its atmosphere are continuously altered. Plate tectonics shift the continents, raise mountains and move the ocean floor while processes not fully understood alter the climate. Such constant change has characterized Earth since its beginning some 4 billion years ago.
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If not the Darwinism is a theory of Biloxi all evolution developed by the English naturalist Charles Darwin and others stating that all species of organism arise and develop through the natural selection of small, inherited variations that increase the individual’s ability to compete, survive and reproduce