Quasars are
A) ancient, extremely high energy galaxies believed to have formed in the early universe.
B) a conglomeration of pulsars within a galaxy.
C) a conglomeration of spiral galaxies.
D) white dwarfs that have undergone final collapse.
A
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Two major types of sediments that may become sedimentary rocks are ____________________ and ____________________
Fill in the blank(s) with correct word
What serves the function in food chains of returning nutrients to the soil to be recycled?
A. producers B. primary consumers C. secondary consumers D. decomposers E. apex predators
Black coffee is best classified as
A. a suspension B. a heterogeneous mixture C. a solution D. an element E. a compound
Which is TRUE regarding the global fishing industry?
A) Fish provide a major portion of the world's food supply. B) Virtually no fish are caught anymore. C) The amount of fish caught has leveled off and declined. D) The most productive fisheries are in the Arctic Ocean. E) Cuba is one of the biggest violators of international fishing treaties.