The most common factor that affects birth and death rates within a population independently of density is
A. Fire
B. Stress
C. Weather
D. Competition
E. None of these is correct
Answer: C
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Which of the following is NOT likely to be reflected in the "Under age 5 mortality indicator"?
A) infant deaths B) food availability C) public sanitation D) heart disease E) basic health services
What might the relationship be between an element's electronegativity and its ability to behave as an oxidizing agent?
A) As the electronegativity goes up, the ability of an element to act as an oxidant increases. B) As the electronegativity goes up, the ability of an element to act as an oxidant decreases. C) As the electronegativity goes up, the ability of an element to act as an oxidant stays the same. D) As the electronegativity increases, the element has a tendency to undergo oxidation. E) none of the above
A secondary rainbow
A) is always brighter than a primary rainbow. B) produces a color pattern that is the same as a primary rainbow. C) is more likely when the Sun is straight over head, or nearly so. D) requires that light be reflected twice within a raindrop. E) all of the above
The residence time refers to the average length of time that a drop of water remains
A. in motion without being "stuck" in a store. B. intact before the hydrogen and oxygen atoms split. C. unpolluted by human activities. D. in its store.