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Biology, 22.06.2019 03:00
Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .
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Biology, 22.06.2019 06:30
Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?
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Biology, 22.06.2019 07:30
In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?
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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.
Answers: 1
When the following chemical reaction is balanced, what number is placed before nh3? n2 + 3h2 → nh3...
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