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Biology, 22.06.2019 10:00
Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
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Biology, 22.06.2019 17:30
Asample of soil from a c horizon is light brown in color and has a high content of a mineral called feldspar. which of the following statements is most likely true
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Biology, 23.06.2019 04:00
Where is the female part of a plant located? a.in the pollen b.in the roots c.in the stem d.inside the flower
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Which best describes the outcome of dna replication...
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