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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
Biology, 22.06.2019 13:30
How does the color of light affect the germination time (amount time a plant takes to develop) of a radish seed?
Answers: 3
Biology, 22.06.2019 14:00
The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird
Answers: 2
Biology, 22.06.2019 14:00
The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed
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