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An atom of nitrogen had seven protons in its nucleus. how many electrons does it have
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Select the best answer for the question, ly 12. which of the following behaviors is not an inherited behavior?
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Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.
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Biology, 22.06.2019 11:30
Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.
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If your job requires you to use a respirator, your employer is required to do three things. what is...
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