Smoking contributes to the risk of all of the following, except
A) lung cancer.
B) heart disease.
C) COPD and other related lung diseases.
D) malaria and tuberculosis.
D
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When Mendel bred green-pea plants with yellow-pea plants, all the offspring had yellow peas. This means that the trait for yellow peas is
A. recessive. B. heterozygous. C. dominant. D. homozygous.
Why is the amount of carbon dioxide dissolved in seawater much less than the theoretical maximum saturation level?
A) Carbon dioxide is very soluble in water. B) Carbon dioxide is able to form a weak acid when combined with seawater. C) Carbon dioxide is quickly used by photosynthetic organisms. D) Carbon dioxide moves quickly from the atmosphere to the ocean.
A tangible geographic area in which no state exercises complete political control is called a(n)
A) frontier. B) ethnic border. C) colony. D) commonwealth. E) buffer.
Which of the following is true about the water table?
A. The water table can slope in opposite directions beneath a hill. B. The shape of the water table does not mimic topography. C. The water table generally is highest in elevation beneath lakes. D. All of these choices are correct. E. None of these choices are correct.