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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 11:00
Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse
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Biology, 22.06.2019 14:20
Which feature would you expect to find in a population in which sexual selection depends on male competition?
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Biology, 22.06.2019 14:50
Involving transcription and translaton. explain the causes and effects of damage to the genetic code.
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Why do scientists organize living things into groups?...
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