The average number of tornadoes per year is highest in ____
a. Oklahoma
b. Kansas
c. Texas
d. Florida
e. Nebraska
ANSWER: c
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What two kinds of fog are the result of adding moisture to a layer of air?
A) advection and radiation B) radiation and upslope C) upslope and steam D) steam and frontal
Two species of insects do not interbreed because their sexual organs will not fit together. This is an example of
A) allopatric speciation. B) sympatric speciation. C) a prezygotic reproductive barrier. D) a postzygotic reproductive barrier.
Which of the following proteins is a hormone?
A) casein B) hemoglobin C) insulin D) all of these
Which of the following statements about catalysts is NOT true?
A. A catalyst alters the rate of a chemical reaction. B. A catalyst can be consumed in a reaction as long as it is regenerated. C. A catalyst does not change the energy of the reactants or the products. D. A catalyst can be used to speed up slow reactions. E. All of the above are true.