The oxygen, O2, and hydrogen sulfide, H2S, molecules are about the same size, and they also have about the same degree of polarity. This helps to explain why
A. cells absorb H2S just as easily as they absorb O2.
B. H2S is such a smelly compound, while O2 has no smell.
C. the body survives when breathing H2S just about as well as it does when breathing O2.
D. the Earth's ancient atmosphere was once abundant with H2S.
Answer: A
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A. a model that represents the shape of the nucleus and the location of the electrons B. a description of the location of the neutrons and protons in an atom C. a model that illustrates the physical structure of the atom D. a model that illustrates the tendency of an atom to undergo radioactive decay and the products it produces E. none of the above
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An interval of geologic time not represented by strata in a particular area is a(n)
____________________. Fill in the blank(s) with the appropriate word(s).