Which of the following does not describe an index fossil?
A. Good correlation tool
B. Poor tool for determining relative age
C. Geographically widespread species
D. Short-lived species
E. Existed during a specific time-period
Answer: B
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Currently, spent fuel rods used to power nuclear reactors are
A. stored outside of the reactor in water-filled pools and years later, in dry casks. B. sent to a national repository. C. placed in metal drums and dumped deep in the ocean. D. loaded into rockets and shot into space. E. treated chemically to speed up the progression of half lives.
In the science fiction book series "Red Mars, Green Mars, Blue Mars" the author spins a story of "terraforming" Mars with the formation of oceans and a breathable atmosphere by the end of the series
The author describes a scenario, however, where the inhabitants of this fictional world were able to live relatively normally on most of the world but not on Olympus Mons and the Tharsus region. Assuming you could create a breathable atmosphere as described in the books, is the description of where you might live on Mars realistic, or just spinning a yarn? A) No, because you could use water ice from these high altitude sites whereas there is no water at lower elevations on Mars. B) Yes, because Olympus Mons and the Tharsus region are higher above the Martian plains than Mt. Everest, so the air would always be dramatically thinner and colder there, even with an Earth atmosphere. C) No, it is absurd. Even with an atmosphere, it would be too cold to live anywhere on Mars. D) No, because these regions are so rugged it would be impossible to live in the Martian mountains, regardless of an atmosphere or not.
The first color of the visible spectrum to disappear as one dives from the surface to the deep is ________.
A. violet B. indigo C. red D. yellow E. green
What is the maximum population size that a given environment can sustain?
a. total fertility rate b. population density c. carrying capacity d. tipping point