Which remains an unsolved challenge presented by extracting oil from oil sands in Alberta, Canada?
A. how to make the process cost effective
B. how to determine precisely where to drill
C. how to avoid environmental damage
D. how to use the resources after they are removed
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Which remains an unsolved challenge presented by extracting oil from oil sands in Alberta, Canada?...
Mathematics, 04.08.2020 14:01
Mathematics, 04.08.2020 14:01