How many molecules of CO2 are produced by one pass through the citric acid cycle?
A) 1
B) 2
C) 3
D) 4
B
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Which of the following is true about polar high-pressure areas?
A. They are responsible for the increased rate of sea ice melt. B. They produce the polar easterlies. C. They are stronger than all other pressure areas on Earth. D. They are cyclonic.
Turbulent wind shear zones and downbursts are hazards caused by thunderstorms. Indicate whether the statement is true or false
A decline of the productive potential of soil, especially on arid or semiarid land, by 10% or more because of prolonged drought and human activities is called ____.
A. salinization B. desertification C. soil erosion D. overgrazing E. waterlogging
Which of the following soil horizon designations is i the correct sequence from the surface to the bedrock?
A) O, E, C, B, A B) A, B, C, O, R C) S, O, I, L D) O, A, E, B, C