Which of the following can be natural sources of water pollution?
a.
volcanic activity
b.
earthquakes
c.
algae blooms
d.
all of the above
All of the above - volcanic activity, earthquakes, algae blooms - can be natural sources of water pollution.
Asked 11/19/2015 1:36:03 PM
Updated 11/19/2015 1:53:12 PM
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Edited by
Janet17 [11/19/2015 1:53:10 PM]
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