Answers by Oskar Duveborn
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Answers by Oskar Duveborn

Answers by Oskar Duveborn
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Compare the blood in the arteries going out to the body cells with the blood in veins coming back to the heart from body cells.
answered Dec 12, 2017
4 votes
160k views
Based on early observations, including those in the table below, scientists proposed that the continents were once together but had drifted apart. However, scientists could not identify anything that would
answered Nov 14, 2017
3 votes
108k views
What happens when charged object is brought near uncharged object? Attract or Repel ?
answered Aug 16, 2017
2 votes
182k views
What is the solution to the equation below? 2(x - 3) = 2x 5?
answered Jul 30, 2017
2 votes
159k views
Which of these postclassical empires covered the largest geographic territory
answered Apr 23, 2017
5 votes
228k views
Five beans have a mass of 2.1 g. How many beans are in 0.454 kg of beans.
answered Oct 9, 2016
6 votes
229k views
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