Answers by Hou Lu
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Answers by Hou Lu

Answers by Hou Lu
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Find the area of the circle
answered Aug 28, 2018
5 votes
4.6k views
How do humans obtain the nitrogen they need for their bodies? a) by absorbing ammonia from bacteria growing from roots of plants b)by absorbing nitrogen found in soil c)by breathing the nitrogen found
answered Aug 22, 2018
5 votes
233k views
What is a space station? Name some uses of space stations.
answered Jan 15, 2018
4 votes
80.1k views
Kira finished 2/5 of an puzzle in 1/ 5 of an hour. At this rate, how many puzzles could she finish in 1 hour?
answered Jan 9, 2018
4 votes
155k views
Round off or add zero to the following calculated answers to give a final answer with three significant figures: 0.00001258 L ...?
answered Jun 15, 2017
3 votes
190k views
8. A log is burning in a fireplace. If the amount of oxygen reaching the log is decreased, which of the following statements is true? The reaction rate increases. The reaction rate decreases. The reaction
answered Jan 25, 2017
5 votes
217k views
A continental tropical air mass formed over the Southwest U.S. This area is called its _____. home region mass region source region front region
answered Jan 18, 2017
0 votes
173k views
How does math relate to electrons and ion formation?
answered Aug 9, 2016
4 votes
69.4k views
Why is Hecate angry at the three witches in MacBeth
answered Mar 3, 2015
4 votes
63.5k views
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