Evidence that the universe originated in a "big bang" includes
A. the differences in compositions of the planets.
B. the fact that stars radiate energy.
C. the observation that stars are all moving apart.
D. All of the choices are correct.
Answer: C
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What was NOT a feature of the Industrial Revolution?
A) Workers often labored for more than 10 hours a day. B) Child labor was often used. C) Time became a commodity. D) Workers organized into labor unions. E) Conflict between classes was minimized.
Which of the following statements best describes the acid/base relationship?
A) As acid strengths increase conjugate base strengths increase. B) As base strengths increase conjugate acid strengths increase. C) both a and b D) neither a nor b
What would explain the poor condition for biological productivity in the open tropical ocean??
A) ?Converging currents produce downwelling, thus carrying nutrients to the deep ocean. B) ?Gyres contain pollution and decaying organisms that use up available nutrients. C) ?Upwelling delivers seafloor sediment to the surface, thus blocking necessary sunlight for photosynthesis. D) ?Strong layering isolates deep, nutrient-rich water from the sunlit ocean surface.
Among unique marsupials (animals with a pouch to carry their young) of the region are kangaroos, wombats, and:
A) dingo B) manatee C) Tasmanian devil D) white tail deer