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Select the correct answer.
What is the main cause of acid rain?
A.
burning of fossil fuels
B.
corrosive, unmaintained buildings
C.
avalanches on a mountain slope
OD. decaying insects and organisms
OE. untreated wastewater
Reset
Next
Select the correct answer.
What is the main cause of acid rain?
A.
burning of fossil fuels
B.
corrosive, unmaintained buildings
C.
avalanches on a mountain slope
OD. decaying insects and organisms
OE. untreated wastewater
Reset
Next