Which of the following fatty acids is(are) unsaturated?
A) arachidonic acid
B) linoleic acid
C) linolenic acid
D) all of these
D
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When Galileo rolled a ball down and up an incline, he found that the ball rolled nearly to
A. higher than its original height. B. halfway its original height. C. three-quarters its original height. D. its initial height.
Air pollution is
A. greatest in newly industrialized countries. B. not a problem in economically developed countries. C. unrelated to the amount of industrial activity in a country. D. All these statements are correct.
Why is silicate the most prevalent mineral in igneous rock?
A) Silicates melt very easily. B) Silicates make up most of the earth's crust. C) Silicate is attracted to heat. D) Silicates are very heavy, so they are perfect for magma.
In terms of pedogenic regimes, soil acidification associated with forest soils in cool climates is
A) laterization. B) salinization. C) calcification. D) podzolization. E) gleization.