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Tadpoles use ____________________ to obtain oxygen. a. gills c. both gills and lungs b. lungs d. neither gills nor lungs
asked
Jan 4, 2017
Biology
high-school
2
answers
0
votes
114k
views
Why does a light go out when you turn off the wall switch? A. The switch changes the direction of the flow of electrons. B. The switch causes a break in the circuit. C. The switch changes the circuit from
asked
Oct 14, 2016
Physics
high-school
2
answers
3
votes
167k
views
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