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11 Dec 2019
Which of these are the two major sources of nitrate pollution in rivers?
a. the burning of fossil fuels by factories and cars
b. animal wastes and the burning of fossil fuels by cars
c. animal wastes and fertilizers
d. fertilizer runoff and the burning of fossil fuels by cars
e. animal wastes and the burning of fossil fuels by factories
Which of these are the two major sources of nitrate pollution in rivers?
a. the burning of fossil fuels by factories and cars
b. animal wastes and the burning of fossil fuels by cars
c. animal wastes and fertilizers
d. fertilizer runoff and the burning of fossil fuels by cars
e. animal wastes and the burning of fossil fuels by factories
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