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what do you think earth looked like millions ago? Explain how plants and animals may have been different then from what they are like now
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For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system
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The tubes transporting minerals and water upward are called ?
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Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen
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Biology, 22.06.2019 08:30
What are some natural processes that represent physical and chemical changes?
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what do you think earth looked like millions ago? Explain how plants and animals may have been diffe...
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