Which of the following is a primary pollutant? a. acid rain, which forms when sulfur dioxide or nitrogen oxides react with water b. co, which comes from fossil fuel–powered engines, such as cars c. no2, which forms when no combines with oxygen in the air d. ozone, which forms when oxygen molecules and atoms combine in the presence of sunlight
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Biology, 22.06.2019 07:20
What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures
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Biology, 22.06.2019 07:50
Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d
Answers: 2
Which of the following is a primary pollutant? a. acid rain, which forms when sulfur dioxide or nit...
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