Which of these are the two major sources of nitrate pollution in rivers?
a. the burning of fos...
Biology, 10.03.2020 17:17 quincyjosiah07
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
Answers: 2
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Liquid water turns into water vapor at which step in the water cycle
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The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2
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Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?
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In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring
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